Dissertations / Theses on the topic 'Transistor Thermique'
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Farjah, Ebrahim. "Contribution aux caractérisations électrique et thermique des transistors de puissance à grille isolée." Grenoble INPG, 1994. http://www.theses.fr/1994INPG0103.
Full textDhombres, Stéphanie. "Étude d'un protocole de régénération thermique de composants électroniques soumis à un rayonnement ionisant." Thesis, Montpellier, 2015. http://www.theses.fr/2015MONTS228.
Full textNowadays, cameras are more and more used in space missions or nuclear plant for observation (civil or military) and monitoring missions (checking the deployment of solar panels, extravehicular operations, nuclear accident, and area storage). The space environment, nuclear reactors or radioactive waste storage areas are radiative environments that can greatly disturb electronic components and systems. In these environments, ionizing radiation degrades the electrical parameters of electronic components. The total ionizing dose induces significant charge build-up in oxides, degrading the electrical properties of the materials of electronic devices. That can result in the loss of functionality of the entire electronic system.In this thesis, we propose a regeneration method to recover the electrical parameters degraded by total ionizing dose of electronic components subjected to ionizing radiation. In this method isothermal annealing cycles are applied to electronic devices. In a first step, this method is applied on MOS transistors, and a study is conducted on the impact of various key parameters of annealing (bias, annealing temperature, annealing time, dose step between each annealing). In a second step, we focus on components more integrated and newer such as CMOS APS image sensors. We experiment what is the impact of annealing on this type of component and finally, the regeneration method is modified to be suitable on these APS sensors to increase their lifetime
BESTAOUI, ZAKIA. "Modelisation electrique et thermique de la diode et du transistor mos de puissance. Identification des parametres electriques et thermiques." Nantes, 2000. http://www.theses.fr/2000NANT2019.
Full textBouguen, Laure. "Annulation de la dérive thermique de capteurs magnétiques à base d'hétérostructures pseudomorphiques AlGaAs/InGaAs/GaAs." Montpellier 2, 2009. http://www.theses.fr/2009MON20075.
Full textThe goal of this work was to decrease, and even cancel, the thermal drift of magnetic sensors based on pseudomorphic AlGaAs/InGaAs/GaAs heterojunction. For that, the chosen solution consisted in controlling the Fermi level pinning at the surface of existing heterojunction. This control has been done by the addition of a gate with different geometries and with a suitable polarisation. We showed that an one dimensional model was not adapted and that it was necessary to do a two dimensional analysis with the finite element method witch explain the results obtained
Amimi, Adel. "Modèle électro-thermique unidimensionnel du transistor bipolaire à grille isolée (IGBT) pour la simulation de circuits de puissance." Rouen, 1997. http://www.theses.fr/1997ROUES033.
Full textRakib, Souad. "Passivation de InP pour transistor MISFET sulfuration thermique basse température et réalisation d'une structure bicouche silice/sulfure/InP /." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37609148t.
Full textCallet, Guillaume. "Caractérisation et modélisation de transistors HEMT AlGaN/GaN et InAlN/GaN pour l’amplification de puissance en radio-fréquences." Limoges, 2011. https://aurore.unilim.fr/theses/nxfile/default/3c0fde17-3720-49cd-9824-bd071826245e/blobholder:0/2011LIMO4033.pdf.
Full textThis report deals with the characterization of GaN HEMTs devices in order to create their model. An exhaustive characterization has been realized for AlInN/GaN and AlGaN/GAN based HEMTs. A special care has been given to the different thermal characterization methods, with the use of the 3ω method for the measurement of the thermal impedance. A study of scaling rules for small-signal model is presented. The non-linear model presented is developed in order to extend his application domain to the power amplification and power switches. Finally it is used in the design of the first poser amplifier base on AlInN technology in Ka-band
Alonzo, Zapata Irving. "Experimental Developments and Numerical Simulations of Far-Field Radiative Thermal Transistor Based on Vanadium Dioxide Thin Films." Electronic Thesis or Diss., Limoges, 2024. http://www.theses.fr/2024LIMO0109.
Full textVanadium dioxide (VO₂) thin films were developed on c-sapphire, r-sapphire, and Si/SiO₂ (100) substrates using Pulsed Laser Deposition (PLD) with an off-axis configuration, supporting relatively large substrate surfaces up to 5×5 cm². After deposition, the VO₂ thin films underwent Rapid Thermal Processing (RTP) to enhance the contrast between their insulating and metallic states during the phase change transition at 68°C (5 orders of magnitude for the electrical resistivity). The physical properties of the VO₂ thin films were strongly correlated with the type of substrate used.This work aims to develop innovative thermal devices by utilizing the abrupt change in emissivity of VO₂ across its metal-insulator transition (MIT) to amplify and modulate far-field radiative heat flux. The emissivity of VO₂ thin films during the MIT was measured precisely using the Thermal Wave Resonant Cavity (TWRC) technique at the Pprime laboratory in Poitiers. The VO2 thin films showed emissivity variations of approximately Δε = 0.38 across their MIT for a 200 nm thickness, with each film exhibiting a unique hysteresis loop.These emissivities were used in modeling and simulating radiative thermal diodes and to theoretically explore a radiative thermal transistor with a base of VO₂ on c-sapphire, r-sapphire, or Si/SiO₂ substrates. An experimental radiative thermal transistor with a VO₂ base on Si/SiO₂ was realized. The internal radiative heat flux densities ϕ₁ (collector-base) and ϕ₂ (base-emitter) were measured to derive ϕ₃. The transistor exhibited a thermal switch performance of 0.55, a thermal modulation amplitude of 60 W/m², and a thermal amplification factor of 0.24. This study, among the first to demonstrate thermal heat density amplification in a radiative thermal transistor, provides insights into VO₂'s thermal and optical properties during its MIT, inspiring the development of new devices like thermal memristors at micrometer scales
Lopez, David. "Intégration dans un environnement de simulation circuit d'un modèle électrothermique de transistor bipolaire à hétérojonction issu de simulations thermiques tridimensionnelles." Limoges, 2002. http://www.theses.fr/2002LIMO0007.
Full textThe work presented here involves an integration into a circuit simulator of a HBT's thermal model from a 3D finite element method thermal simulation
Gauthier, Alexis. "Etude et développement d’une nouvelle architecture de transistor bipolaire à hétérojonction Si / SiGe compatible avec la technologie CMOS FD-SOI." Thesis, Lille 1, 2019. http://www.theses.fr/2019LIL1I081.
Full textThe studies presented in this thesis deal with the development and the optimization of bipolar transistors for next BiCMOS technologies generations. The BiCMOS055 technology is used as the reference with 320 GHz fT and 370 GHz fMAX performances. Firstly, it is showed that the vertical profile optimization, including thermal budget, base and collector profiles allows to reach 400 GHz fT HBT while keeping CMOS compatibility. In a second time, a fully implanted collector is presented. Phosphorous-carbon co-implantation leads to defect-free substrate, precise dopants profile control and promising electrical performances. A new 450 GHz fT record is set thanks to optimized design rules. A low-depth STI module (SSTI) is developed to limit the base / collector capacitance increase linked to this type of technology. In a third time, the silicon integration of a new bipolar transistor architecture is detailed with the aim of overcoming DPSA-SEG architecture limitations used in BiCMOS055 and first electrical results are discussed. This part shows the challenges of the integration of new-generation bipolar transistors in a CMOS platform. The functionality of the emitter / base architecture is demonstrated through dc measurements. Eventually, the feasibility of 28-nm integration is evaluated with specific experiments, especially about implantations through the SOI, and an overview of potential 3D-integrations is presented
El, Rafei Abdelkader. "Analyse des effets dispersifs dans les transistors radiofréquences par mesures électriques." Limoges, 2011. https://aurore.unilim.fr/theses/nxfile/default/381740cc-fba9-4386-9b9d-0e0dd1113527/blobholder:0/2011LIMO4037.pdf.
Full textPower amplifiers (PAs) are key elements of telecommunications and radar front ends at radio frequencies. The potential of the PA is limited by the phenomena of dispersion. In this context, we are interested in the characterization of thermal phenomena in the HBT transistors of different technology (GaAs, InP and SiGe) and characterization of thermal and traps effects in HEMT transistors based on GaN (AlGaN and AlInN) at low frequencies. A bench for low frequency S-parameters measurement [10 Hz, 40 GHz] is set up to enable us to study the behavior of the new components in the frequency range seat of nonlinear parasitic phenomena. A simple, yet accurate, method to experimentally characterize the thermal impedance of Hetero junction Bipolar Transistors (HBT) with different technologies proposed. This method relies on low frequency S-parameters measurements. A detailed study has been initiated to characterize the phenomena of low frequency dispersion in the HEMT transistors based on GaN. The thermal and traps effects are studied for both technologies (AlGaN/GaN and AlInN/GaN) with the method of admittance spectroscopy to quantify the levels of deep traps
Campo, Eric. "Procédés thermiques rapides RTA,O : Applications à la réalisation de transistors à films minces de silicium déposés à partir de disilane." Toulouse, INSA, 1993. http://www.theses.fr/1993ISAT0012.
Full textJaume, Denis. "Etude des gardes périphériques des composants silicium planar haute-tension en technologie sipos." Toulouse, INSA, 1990. http://www.theses.fr/1990ISAT0019.
Full textDenorme, Stéphane. "Étude de l'influence des procédés technologiques de type BiCMOS à haute densité d'intégration sur la réalisation de bases fines très dopées dans les transistors bipolaires submicroniques." Université Joseph Fourier (Grenoble ; 1971-2015), 1995. http://www.theses.fr/1995GRE10130.
Full textYachou, Driss. "Etude des effets parasites électriques et thermiques intervenant dans le fonctionnement des transistors sur isolant (SOI)." Grenoble 1, 1994. http://www.theses.fr/1994GRE10035.
Full textWeisz, Mario. "Electrothermal device-to-circuit interactions for half THz SiGe∶C HBT technologies." Thesis, Bordeaux 1, 2013. http://www.theses.fr/2013BOR14909/document.
Full textThe power generate by modern silicon germanium (SiGe) heterojunction bipolar transistors (HBTs) can produce large thermal gradients across the silicon substrate. The device opering temperature modifies model parameters and can significantly affect circuit operation. This work characterizes and models self-heating and thermal coupling in SiGe HBTs. The self-heating effect is evaluated with low frequency and pulsed measurements. A novel pulse measurement system is presented that allows isothermal DC and RF measurements with 100ns pulses. Electrothermal intra- and inter-device feedback is extensively studied and the impact on the performance of two analog circuits is evaluated. Novel test structures are designed and fabricated to measure thermal coupling between single transistors (inter-device) as well as between the emitter stripes of a multi-finger transistor (intra-device). Thermal coupling factors are extracted from measurements and from 3D thermal simulations. Thermally coupled simulations of a ring oscillator (RO) with 218 transistors and of a 60GHz power amplifier (PA) are carried out. Current mode logic (CML) ROs are designed and measured. Layout optimizations lead to record gate delay of 1.65ps. The thermal performance of a 60GHz power amplifier is compared when realized with a multi-transistor array (MTA) and with a multi-finger trasistor (MFT). Finally, perspectives of this work within a CAD based circuit design environment are discussed
Bryan, Charlotte. "Etude et développement de capteurs thermiques pour composants de puissance." Thesis, Université Grenoble Alpes, 2020. http://www.theses.fr/2020GRALI079.
Full textSince the start of the century, the demand for power components has risen sharply. Power components are used in integrated circuits for applications requiring high frequencies, of several GHz, and powers up to 100 W, mainly for mobile phones and chargers. Materials such as gallium nitride (GaN) and aluminium gallium nitride (AlGaN) have emerged in this field to create new power devices including power diodes and High Electron Mobility Transistors (HEMT), overcoming the limitations of silicon-based devices. HEMTs deliver high power and overheating can occur if they are not well managed, leading to the degradation of its cabling and packaging. Heat management in power circuits, as in electronic circuits in general, is a major issue. Diodes and sensors made from thermistant materials - materials with large variations in resistance as a function of temperature - are used to measure the HEMTs temperature, however, both of these require external currents to operate and use additional space in the device packaging.Thermoelectric sensors for power devices were therefore developed during this research; these sensors are based on the Seebeck effect, which directly converts heat into electrical energy. The output voltage of these thermoelectric sensors is directly proportional to the temperature difference along the sensor so no external energy is required. These sensors can measure a temperature difference and the heat flow can also be deduced. This work describes the first fabrication of such sensors.Two types of sensors were produced: the first is an on-chip sensor; it is fabricated at the same time as the HEMT transistor. This enables it to be placed as close as possible to the transistor for a more accurate temperature measurement. It is also directly integrated onto the HEMT chip so it does not take up additional space in the packaging, which implies that it must follow the same dimensioning and fabrication rules as the transistor. This sensor uses the 2D Electron Gas (2DEG) at the AlGaN and GaN’s interface for electrical transport.The second type of sensor is a stand-alone thermoelectric sensor designed to deliver higher electrical performance. It is fabricated independently, so has fewer constraints than the on-board sensors. Two stand-alone sensors were developed: one using the 2DEG and the other using an n-doped GaN. Their geometry was dimensioned using results from a study carried out beforehand on the contact resistances and on the thermoelectric properties of the two materials.Both types of sensors were tested and verified to be functional. Several geometries were fabricated for each type, and their sensitivities compared. The on-chip sensor was characterised while activating the adjacent transistor, which represents its intended function. The stand-alone sensors were characterised using metallic heat lines to their side. The measurements were taken at a number of different surrounding temperatures in each case. High sensitivities were obtained with these sensors: 350 mV / K for the on-board sensor and 14 V / K for the stand-alone sensor
Vu, Van Tuan. "Recherche et évaluation d'une nouvelle architecture de transistor bipolaire à hétérojonction Si/SiGe pour la prochaine génération de technologie BiCMOS." Thesis, Bordeaux, 2016. http://www.theses.fr/2016BORD0304/document.
Full textThe ultimate objective of this thesis is to propose and evaluate a novel SiGe HBT architec-ture overcoming the limitation of the conventional Double-Polysilicon Self-Aligned (DPSA) archi-tecture using Selective Epitaxial Growth (SEG). This architecture is designed to be compatible with the 28-nm Fully Depleted (FD) Silicon On Insulator (SOI) CMOS with a purpose to reach the objec-tive of 400 GHz fT and 600 GHz fMAX performance in this node. In order to achieve this ambitious objective, several studies, including the exploration and comparison of different SiGe HBT architec-tures, 55-nm Si/SiGe BiCMOS TCAD calibration, Si/SiGe BiCMOS thermal budget study, investi-gating a novel architecture and its optimization, have been carried out. Both, the fabrication process and physical device models (incl. band gap narrowing, saturation velocity, high-field mobility, SRH recombination, impact ionization, distributed emitter resistance, self-heating and trap-assisted tunnel-ing, as well as band-to-band tunneling), have been calibrated in the 55-nm Si/SiGe BiCMOS tech-nology. Furthermore, investigations done on process thermal budget reduction show that a 370 GHz fT SiGe HBT can be achieved in 55nm assuming the modification of few process steps and the tuning of the bipolar vertical profile. Finally, the Fully Self-Aligned (FSA) SiGe HBT architecture using Selective Epitaxial Growth (SEG) and featuring an Epitaxial eXtrinsic Base Isolated from the Collector (EXBIC) is chosen as the most promising candidate for the 28-nm FD-SOI BiCMOS genera-tion. The optimization of this architecture results in interesting electrical performances such as 470 GHz fT and 870 GHz fMAX in this technology node
Lefebvre, Stéphane. "Contribution à la caractérisation de l'IGBT en commutation à zéro de courant." Cachan, Ecole normale supérieure, 1994. http://www.theses.fr/1994DENS0009.
Full textKhelif, Messaoud. "Contribution à l'étude et la prédiction des défauts de vieillissement par fatigue thermique des composants électroniques de puissance." Ecully, Ecole centrale de Lyon, 1994. http://www.theses.fr/1994ECDL0051.
Full textNiu, Shiqin. "Conception, optimisation et caractérisation d’un transistor à effet de champ haute tension en Carbure de Silicium." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSEI136/document.
Full textSilicon carbide (SiC) has higher critical electric field for breakdown and lower intrinsic carrier concentration than silicon, which are very attractive for high power and high temperature power electric applications. In this thesis, a new 3.3kV/20A SiC-4H JFET is designed and fabricated for motor drive (330kW). This breakdown voltage is beyond the state of art of the commercial unipolar SiC devices. The first characterization shows that the breakdown voltage is lower (2.5kV) than its theoretical value. Also the on-state resistance is more important than expected. By means of finite element simulation the origins of the failure are identified and then verified by optical analysis. Hence, a new layout is designed followed by a new generation of SiC-4H JFET is fabricated. Test results show the 3.3kV JFET is developed successfully. Meanwhile, the electro-thermal mechanism in the SiC JFETs under short circuit is studied by means of TCAD simulation. The commercial 1200V SIT (USCi) and LV-JFET (Infineon) are used as sample. A hotspot inside the structures is observed. And the impact the bulk thickness and the canal doping on the short circuit capability of the devices are shown. The physical models validated by this study will be used on our 3.3kV once it is packaged
Reichert, Günter. "Étude en haute température des transistors MOS submicroniques fabriqués sur silicium isolant." Grenoble INPG, 1998. http://www.theses.fr/1998INPG0044.
Full textDutta, Bivas. "Energétique dans les dispositifs à un seul électron basés sur des îlots métalliques et des points quantiques." Thesis, Université Grenoble Alpes (ComUE), 2018. http://www.theses.fr/2018GREAY055/document.
Full textAt this age of technologically advanced world, the electronic devices are getting more and more densely packed with micro-electronic elements of nano-scale dimension. As a result the heat dissipation produced in these microelectronic-circuits is also increasing immensely, causing a huge amount of energy loss without any use. The textit{thermoelectric effects} come into play here as one can use this wasted heat to produce some useful work with the help of thermoelectric conversion. In order to achieve such a textit{heat engine} with a reasonably high efficiency, one needs to understand its thermal behavior at the basic level. Therefore, the study of thermal transport and thermoelectric effect in nano-structures has significant importance both from scientific and application point of view.In this thesis we present the experimental studies of thermal and thermoelectric transport in different kinds of single-electron devices, where the electronic flow can be controlled at the single electron level.First, we demonstrate the measurement of gate-controlled heat transport in a Single-Electron Transistor ($SET$), acting as a heat switch between two heat reservoirs. The measurement of temperature of the leads of the $SET$ allows us to determine its thermal conductance with the help of a steady state heat-balance among all possible paths of heat flow. The comparison of thermal conductance of the $SET$ with its electrical conductance indicates a strong violation of the Wiedemann-Franz (WF) law away from the charge degeneracy.Second, we extend the study of thermal transport in single-electron devices to the quantum limit, where in addition to the Coulomb interactions the quantum effects are also need to be taken into account, and therefore the individual discrete electronic levels take part in the transport process. We discuss the heat-balance between two heat reservoirs, coupled through a single Quantum-Dot ($QD$) level, and the dissipation of the tunneling electrons on the leads. This produces Coulomb-diamond shapes in the electronic-temperature map of the `source' lead, as a function of bias and gate voltage.Third, we present the measurement of thermoelectric transport in a single $QD$ junction, starting from the weak coupling regime to the strong coupling-Kondo regime. The experiments introduces a new way of measuring thermovoltage realizing a close to perfect open-circuit condition. The thermopower in a weakly coupled $QD$ shows an expected `$e$' periodic behavior with the gate-induced charge, while it shows a distinct `$2e$' periodic feature in the presence of Kondo spin-correlation. The temperature dependence study of the Kondo-correlated thermopower reveals the fact that the Kondo-resonance is not always pinned to the Fermi level of the leads but it can be slightly off, in agreement with the theoretical predictions.This study opens the door for accessing a single $QD$ junction to operate it as a $QD$-heat engine, where the thermodynamic properties of the device are governed by the laws of textit{quantum thermodynamics}
Hniki, Saâdia. "Contribution à la modélisation des dispositifs MOS haute tension pour les circuits intégrés de puissance ("Smart Power")." Toulouse 3, 2010. http://thesesups.ups-tlse.fr/1162/.
Full textIn recent decades, power integrated circuits have experienced very significant growth. Today the regulation and distribution of electrical energy are crucial. The reduction of the dimensions and the need for power highlighted the need for efficient structures. Technology "smart power" has been developed to meet these demands. This technology uses high voltage devices, offering new solutions through its unique characteristics at high voltages and currents. The behavior of these devices is accompanied by the appearance of many phenomena. An accurate modeling of these phenomena is needed to replicate its physical behavior. The objective of this thesis is to improve modeling and to establish a good method of extracting physical parameters related to HV MOS. This thesis has been mainly devoted to modeling the phenomenon of self-heating: development of test structure, modeling of thermal coupling between the sources of transistor, development tool for generating the thermal network. This thesis also looks at the definition of a method for extracting RF noise in the high-voltage transistor including extrinsic gate resistance and capacity Cgs and Cgd. Finally, the last part of the thesis presents a brief assessment of compact HiSIM_HV dedicated to HV MOS and compares it with the macro model used by STMicroelectronics. The results presented in this thesis have been validated by comparison with different measures on SOI technology and solid substrate
Bresson, Nicolas. "Caractérisation électrique des substrats SOI innovants." Grenoble INPG, 2005. http://www.theses.fr/2005INPG0111.
Full textSilicon On Insulator technology (SOI) presents a considerable interest for the micro-electronics because it gradually replaces bulk silicon technology. These last years, new concepts of structures and new manufacturing units allowed a reduction in the cost of SOI substrates, making this technology competitive for high speed and low power CMOS devices. The aim of this thesis is the investigation of Y-MOS (pseudo-MOSFET) and Hg-FET, two techniques very suitable to compare the quality and the electric parameters of various SOI structures. The second objective is to seek solution for improving the thermal dissipation through the buried oxide, in order to enhance of the performances of the SOI transistors while avoiding an increase in the operating temperature. The first chapter reminds the main SOI wafer processing techniques as well as the differences between SOI and bulk silicon. We present, in the second chapter, the electrical techniques of characterization (Y-MOS and Hg-FET) used for this works. The analysis of the measurement errors, the preparation of the samples and the correlation between Y-MOS and Hg-FET are also included. The third chapter is devoted to the study of the innovating substrates. We present results of characterization, modelling and simulation for ultra-thin silicon films. We also introduce the characterization of ultra-thin BOX and silicon on quartz (SOQ). The fourth chapter is related to the integration of high thermal conductivity materials for SOI MOSFET transistors. Numerical simulations reveal the thermal and electrical benefit when the buried oxide material is changed
Dhokkar, Sonia. "Etude des phénomènes thermiques dans un MOSFET en commutation : mesure de la température à haute résolution spatiale et temporelle par radiométrie proche infrarouge et confrontation à un modèle thermique." Poitiers, 2008. http://www.theses.fr/2008POIT2305.
Full textSaludjian, Lucas. "Optimisations en électrotechnique par algorithmes génétiques." Grenoble INPG, 1997. http://www.theses.fr/1997INPG0073.
Full textIn this document, we describe new possibilities offered by genetic algorithms in Electrical Engineering. After analyzing the different existing methods of optimization, we underline their weak and their strong points by comparing them on sorne test problems. The conclusions of this comparative study help us to dçvelop an effective optimization algorithm. This algorithm ensures both a global convergence and low evaluation cost from the function to be optimized. We also consider the fundamental point which consists in introducing sorne supplementary informations concerning the nature of the data of the problem to be treated. This is do ne in order to widen the scope of our optimization problems to various domains of Electrical Engineering. The optimization algorithm was tested and validated on three different applications: - Shape optimization of a cooling structure for Power Electronics component - Optimization of three-dimensional mesh quality for Finite Element software - Shape optimization of an electrornagnetic device based on superconducting coils
Benmansour, Adel Woirgard Eric. "Contribution à l'étude des mécanismes de défaillances de l'IGBT sous régimes de fortes contraintes électriques et thermiques." S. l. : Bordeaux 1, 2008. http://ori-oai.u-bordeaux1.fr/pdf/2008/BENMANSOUR_ADEL_2008.
Full textAlnahar, Mouaz. "Comportement de l'IGBT en régime extrême." Grenoble INPG, 1999. http://www.theses.fr/1999INPG0050.
Full textSinha, Pravin. "Contribution to failure mechanism driven qualification of electronic power devices and design guidelines for high temperature automotive applications." Télécom Bretagne, 2009. http://www.theses.fr/2009TELB0079.
Full textNajjari, Hamza. "Power Amplifier Design Based on Electro-Thermal Considerations." Thesis, Bordeaux, 2019. http://www.theses.fr/2019BORD0422.
Full textThe aim of this work is to design a power amplifier based on electrothermal considerations. It describes the Dynamic Error Vector Magnitude challenge and long packet issue when designing a power amplifier with hetero-junction bipolar transistors. Based on the circuit electrothermal behavior, an optimization method of both the static and dynamic linearity is proposed. A complete RF front-end (PA + coupler + switch + LNA) is designed for the latest WLAN standard: the Wi-Fi 6. The dynamic temperature distribution in the circuit is analyzed. It’s impact on the performances is quantified. Finally, a programmable temperature dependent bias is designed to compensate for performance degradation. The measurements show a significant linearity improvement with this compensation, allowing the PA to maintain the DEVM lower than -47dB at 14.5 dBm output power, over a large ambient temperature range from -40°C to 85°C
Hniki, Saadia. "Contribution à la modélisation des dispositifs MOS haute tension pour les circuits intégrés de puissance ("Smart Power")." Phd thesis, Université Paul Sabatier - Toulouse III, 2010. http://tel.archives-ouvertes.fr/tel-00581114.
Full textGarchery, Laurent. "Fabrication et étude des propriétés physiques des nanostructures Si/SiGe : application aux nouveaux dispositifs." Université Joseph Fourier (Grenoble), 1996. http://www.theses.fr/1996GRE10232.
Full textHamidi, Amina. "Contribution à l'étude des phénomènes de fatique thermique des modules IGBT de forte puissance destinés aux applications de traction." Vandoeuvre-les-Nancy, INPL, 1998. http://www.theses.fr/1998INPL050N.
Full textThe recent use of the hybrid integration technology of high power IGBT modules in traction applications instead of the classically used presspacked thyristors or GTOs introduced new questions conceming the reliability of the modules' packaging when subjected to the traction thermal cycles. The aim of this thesis is to contribute to understand the failure mechanisms of IGBT modules in traction environment. Therefore, a good knowledge of the aging accelerators and the failure indicators is indispensable. The long term goal of the study is to help to find a law expressi11g the modules life time as a function of their working conditions. To treat the problem, we chose an experimental approach consisting in power cycling accelerated tests and technological and failure analysis. We validated a contact temperature measurement method on silicon chips surface which was used to localize and evaluate the highest thernial stress in power cycling conditions. These measurements made it possible to evaluate a thermal model of the modules packaging using LAASTHERM software. A local thermomechanical modeling of the modules with the finite element method was also achieved and provided the mechanical stress in the weakest interfaces of the packaging. We finally proposed an empirical aging model but we didn't get enough experimental data to validate it
Gendron, Amaury. "Structures de protection innovantes contre les décharges électrostatiques dédiées aux entrées/sorties hautes tensions de technologies SmartPower." Phd thesis, Université Paul Sabatier - Toulouse III, 2007. http://tel.archives-ouvertes.fr/tel-00362699.
Full textMerabet, Abdelali. "Etude technologique de bicouches polysilicium sur silicium monocristallin destinées à la fabrication de transistors bipolaires submicroniques." Lyon, INSA, 1995. http://www.theses.fr/1995ISAL0019.
Full textThe aim of this work is the technological study of the polysilicon on monocrystalline silicon bilayers used in the submicronic bipolar transistors fabrication. The samples have been essentially implanted by arsenic (As) and / or boron (B) and subsequently annealed by RTA ( Rapid Thermal annealing) for 1 to 20 s at typical temperatures comprised in the 1000- 1150 °c range. The SIMS profiles enlightened the slowing-down B - diffusion in presence of As ( NPN configuration : extrinsic base). TEM analysis revealed an amorphous layer ( 150 nm) resulting from the As - implantation. Sheet resistance measurements and Hall effect as a function of annealing conditions, allow us to put in evidence the electrical activation of dopants. The SIMS profiles have been adjusted by TITAN V ( CNET- Meylan ) process simulators. For all annealing temperature, the diffusion coefficients increases along with the polysilicon depth. One of the major hypothesis is that the As tend to saturate the grains boundaries and then inhibit B - diffusion along them. Consequently, we develop an inter-codiffusion of As/B model, between grains and grain boundaries. A system of 4 equations is resolved by implicite scheme. The first numerical experiments seems to validate this model
Meysenc, Luc. "Étude des micro-échangeurs intégrés pour le refroidissement des semi-conducteurs de puissance." Grenoble INPG, 1998. http://www.theses.fr/1998INPG0022.
Full textThe aim of this work is to study the cooling of power semiconductors by the use of integrated micro heat exchangers. The heatsink is not placed under the component case but is directly integrated under the silicon chip. Thus, in a first time, electrical, thermal and technological characteristics of power components are renûnded. Two cooling principles hâve been retained : single phase forced convection and two-phase forced convection. Single phase forced convection is studied in the second chapter. The most adéquate corrélations for the calculation of the heat transfer coefficient are extracted from a bibliography review. Then, a conception methodology is established to optimise the heatsink sizes in order to minimise its thermal résistance and the pumping energy. Finally, the validity of the study is checked with measurements realised on single chip prototypes. A similar way is employed to study two-phase forced convection. Two-phase heat transfer, pressure drop and critical heat flux are obtained from a bibliographical review. From thèse instructions, a conception methodology is established, methodology which is also checked by measurements realised on prototypes
Lancry, Ophélie. "Etude par microspectrométrie Raman de matériaux et de composants microélectroniques à base de semi-conducteurs III-V grand gap." Phd thesis, Université des Sciences et Technologie de Lille - Lille I, 2009. http://tel.archives-ouvertes.fr/tel-00460102.
Full textGarrab, Hatem. "Contribution à la modélisation électro-thermique de la cellule de commutation MOSFET-Diode." Lyon, INSA, 2003. http://www.theses.fr/2003ISAL0009.
Full textThe simulation of power semiconductor devices and power converters is a strategic research area for the future. Indeed, the fabrication of a prototype demands more and more spend time. So, virtual prototyping, i. E. The accurate simulation of power converters, is a strong need. The job corresponds to the analysis of the possibilities in numerical simulation based on the finite Element-method of the switching cell MOSFET-diode. Particularly, the Electro-thermal modelling of the PIN diode has been obtained. More over an original technological-parameter extraction-method has enabled to obtain excellent agreements between simulation and experiment-results, even in the case of switching phases. This objective has been reached because of the accurate modelling of the wiring elements. Finally, an Electro-thermal coupling analysis has enabled to develop a bond graph model representing temperature gradients that occur during a self-heating phase
Garrab, Hatem Morel Hervé. "Contribution à la modélisation électro-thermique de la cellule de commutation MOSFET-Diode." Villeurbanne : Doc'INSA, 2005. http://docinsa.insa-lyon.fr/these/pont.php?id=garrab.
Full textBrocero, Guillaume. "Comparaison de méthodes de caractérisation thermique de transistors de puissance hyperfréquence de la filière nitrure de gallium." Thesis, Normandie, 2018. http://www.theses.fr/2018NORMC222/document.
Full textAt the moment, AlGaN/GaN HEMTs (High Electron Mobility Transistors) are the most promising for high-power hyperfrequency applications, essentially due to their large carrier density and a high electronic mobility. However, the temperature generating during operational conditions is a crucial parameter to measure, in order to estimate the reliability and durability of components. For these reasons, we compared thermoreflectance and Raman spectroscopy, that are non-destructive and possessing a submicronic spatial resolution. These techniques have already proven their feasibility as thermal characterization methods in both continuous wave and pulsed operational modes. We compare here their adaptability and performance to the conception of a thermal test bench. These methods are known for characterizing specific types of material: metals for thermoreflectance and semiconductors for Raman spectroscopy, leading us to the eventuality to combine them. We compared several results measured by thermoreflectance method with equipment from two different manufacturers that commercialize this technology, so we could highlight some aspects and drawbacks that are note relayed in the literature. With Raman spectroscopy, we identified metrology parameters allowing to realize a thermal measurement setup as reproducible as possible, and we also present an innovative method to probe surface material, especially metals
Bénard, Christelle. "Etudes phénomènes de dégradation des transistos MOS de type porteurs chauds et Negative Bias Temperature Instability (NBTI)." Aix-Marseille 1, 2008. http://theses.univ-amu.fr.lama.univ-amu.fr/2008AIX11028.pdf.
Full textThis thesis work focuses on the different degradation phenomena that can affect a MOSFET. Two degradation modes have been specifically investigated: the Hot Carrier degradation and the NBTI degradation. In the first part, we fully study the relaxation phenomena specific of the defects generated by NBTI. This allows us to further understand the instabilities responsible for the characterization difficulty of the NBTI reliability. We examine in a second part the different existing NBTI characterization methods. It is made clear that, today, the only reliable method is the very fast Vt measurement which avoids any relaxation effect. Thanks to these studies, we have further interpreted the NBTI degradations. We have described a physical model of the NBTI degradation valid for all the studied transistors (Tox=23Å until Tox=200Å). According to this model, a double phenomenon of defect generation is responsible of the parameter shifts: the Si-H bond break which generates an interface state and a hole trap in the near oxide and the trapping on pre-existing defects (higher in thin oxides Tox<32Å). In parallel, we have studied the HC degradation on various transistors. This study has highlighted current degradation phenomena, still not well understood, as the abnormal temperature behavior of the degradation of low voltage transistors, or as the existing of two hot spots and its consequences in specific LDD structures. In the last part, we present the relation between static and dynamic degradations, more representative of the transistor normal conditions of use. This part proves, for example, that the HC contribution is not negligible in the degradation of an inverter gate, despite the fact that the NBTI period is much longer than the HC one
Benbakhti, Brahim. "Analyses physique et thermique de transistors à effet de champ de la filière GaN : optimisation de structures pour l'amplification de puisssance hyperfréquence." Lille 1, 2006. https://pepite-depot.univ-lille.fr/RESTREINT/Th_Num/2006/50376_2006_294.pdf.
Full textBelaïd, Mohamed Ali. "Contribution à l’analyse des dégradations d’origine thermique et des interactions électrothermiques dans les dispositifs LDMOS RF de puissance." Rouen, 2006. http://www.theses.fr/2006ROUES053.
Full textThe semiconductor characteristics are sensitive to temperature variations, in particular for ultra high frequency power devices. The temperature can limit the lifetime of semiconductors and plays an essential part in the degradation mechanisms. The thermal phenomenon remains however the principal cause of degradation in most cases. Consequently, the thermal aspects are becoming important for RF power devices in many applications, which can lead to the device failure. This work presents a bench dedicated to the thermal ageing. A power FR LDMOS transistor has been chosen for our first tests in accelerated ageing under various conditions. An electric characterization (IC-CAP software) has been made, and a thermoelectric model (under ADS) has been implemented, taking into account the temperature evolution in the device, which is used as the reliability tool (parameters extraction)
Alwan, Mohamad. "Contribution à l’étude de l’impact des dégradations d’origines électriques et thermiques sur les performances du transistor VDMOS de puissance." Rouen, 2007. http://www.theses.fr/2007ROUES027.
Full textThe power electronics modules are required to be strongly integrated and led to their capacity limits of operation. In addition, these modules are often subjected to several thermal environments which can deteriorate the semiconductors properties, and even to destroy them. The temperature can play an essential part in the degradation mechanisms. This work consists to take into account the degradation mechanisms in microelectronics components, like Power VDMOS, on their electric performances. A numerical analysis has been performed to evaluate the thermal stress effect on static and dynamic characteristics of VDMOS power FET’s. Under thermal stress conditions, some modifications of physical and electrical VDMOS properties are observed. We analyse, theoretically and numerically, parameters responsible of these modifications. Approximate expressions of the ionization coefficients and breakdown voltage in terms of temperature are proposed. Non-punch-throughjunction theory is used to express the breakdown voltage and the space charge extension with respect to the impurity concentration and the temperature. The capacitances of the device have been also studied. The effect of the stress on C-V characteristics is observed and analyzed. We notice that the drain-gate, drain-source and gate-source capacitances are shifted due to the degradation of device physical properties versus thermal stress. In a wide field of experimental conditions, we propose, by deepened physical analyses and 2D simulations (Silvaco), to highlight these phenomena of degradation being able to cause failures of the devices and microelectronics systems containing VDMOS. We have studied the effects of High Electric Field Stress (HEFS), thermal operating, Bias Temperature Instability (BTI) and Bias thermal cycling in threshold voltage and gate charge of n-channel Power VDMOSFETs. The gate charge characteristics and C-V capacitance have been investigated during stress. It is shown that the main degradation issues in the Si Power VDMOSFETs are the charge trapping and the trap creation at the interface of the gate dielectric induced by energetic free carriers which have sufficient energy to cross the SiO2/Si barrier
Khelifi, Wissem. "Développement de polymères semi-conducteurs absorbant dans le proche infra-rouge pour des interfaces sans contact." Thesis, Pau, 2019. http://www.theses.fr/2019PAUU3001.
Full textThis thesis work focuses on the development of conjugated polymeric materials which absorb in the near infrared. It is the result of the TAPIR project funded by the ANR in which we aim to develop human-machine interface (HMI) devices for applications in the health sector, in order to limit the spread of pathogens. Since HMIs are controlled by hand, without contact, thanks to the reflectivity of the skin (spectral range 850-950 nm), it is necessary to develop materials which ansorb in this range. In this project, our role was to synthesize the active part of the infrared photodetector used to retrieve the information. A bibliographical study and preliminary calculations have allowed a judicious selection of different monomers to ensure intrinsic stability and obtain the required absorption properties. Different donor monomers (D) and acceptors (A) were combined to synthesize alternating copolymers of types (D-A). Two families of copolymers which absorb in the near infrared have been synthesized. All copolymers have been synthesized via Stille polycondensation. Their optical, electronic and thermal properties have been studied. Subsequently, after confirming the predominant role of the strength of the accepting monomer, compared to that of the donor, on the absorption properties and electronic levels of the various copolymers obtained, we developed an original approach that has been reported very rarely in the literature. It consists of the production of copolymers of the type (A-A). Thus, we have synthesized six copolymers which absorb in the desired wavelength range, and even beyond. Finally, some copolymers have been characterized as OFET devices and photodetectors
Thiam, Ndèye Arame. "Etude et développement de transistors bipolaires à hétérojonctions InP/GaAsSb reportés sur Si en vue de l’amélioration de la dissipation thermique." Thesis, Lille 1, 2012. http://www.theses.fr/2012LIL10168/document.
Full textThe InP heterojonctions bipolar transistors (HBT) offer today cut-off frequencies larger than 400GHz for the InP / GaAsSb system. Thanks to these performances, these transistors are used for the realization of successful circuits in millimeter-wave applications such as the optical communications. So, to reach these remarkable performances, the HBT are subject to a notorious self-heating phenomenon due to high current density of collector. This thesis thus has for object the study and the development of InP / GaAsSb HBT transferred on a host substrate of silicon with the aim of the improvement of the thermal behavior. We report first of all the principles of the bipolar transistor as well as the state of the art of the various materials used for fast transistors. A transfer technique of epitaxial layers was then presented. We study bounding problems resulting from the chosen technique and transfer parameters for valid thermo-compression at low temperature were optimized. The development of InP / GaAsSb transferred technology on silicon was then made. In particular, the collector contact realization has needed particular attention. Active layers thickness reduction as well as device fabrication process technology allowed reaching transition frequency Ft higher than 400GHz. The study of HBT thermal behavior was finally presented with thermal resistance extraction. Very low values were obtained on the transferred technology, from 800 to1300 W/K.m according to transistors size; these values are very close to those obtained by TCAD simulation for such a technology. It is the first measurement on InP / GaAsSb transferred-HBT on high thermal conductivity silicon substrate. This transfer technology has so allowed thermal resistance improvement of 70 % compared with that of standard HBT technology. This work leads to the influence of transferred-substrate for the severe reduction of self-heating in bipolar transistors technology
Kane, Ousmane Magatte. "High-frequency noise and circuit properties of advanced FDSOI transistors." Thesis, Lille, 2020. http://www.theses.fr/2020LILUI072.
Full textFully-Depleted Silicon-on-Insulator (FDSOI) is one of the industry technologies architected to meet the requirements of emerging mobile, Internet-of-Things (IoT), and RF applications. It is a competitive alternative to the FinFET technology in all applications where brute-force computational power is not the unique primary concern, but where end-of-the roadmap device performance is counter-balanced by strict low-power/low-consumption requirements. FDSOI has also a definite advantage over competitors in simplicity and costs, due to reduced mask-count (impacting process complexity and cost) and similarity to bulk MOS devices (reducing time and effort to port/adapt existing design to the technology).A main driver for the technology adoption is the possibility of implementing in FDSOI with direct integration with the digital content of all or part of the RF circuitry that are necessary to interface the product to the outside world. Recent publications have demonstrated impressive RF figure-of-merit for FDSOI devices with Ft/Fmax reaching 400GHz. Therefore, it has viable potentials for mmW applications such as 5G.However, today’s state-of-the art back-end-of-line (BEOL) interconnect poses a good amount of incertitude on the RF behavior of the devices because of the multiple layers of thin metallic interconnections but also because of the size of the devices, more specifically 20nm technology node in the present thesis. Therefore, an important part of the thesis was on assessing the impact of the BEOL on said state-of-the-art devices. This included the impact on the S-parameters as well as the high-frequency noise in the millimeter wave range. Developing de-embedding methodologies was key for this purpose. Proper modeling of the BEOL in order to understand the distribution of the losses in the BEOL was pursued together with an extensive effort in geometry optimization of the device and its layout. Dedicated layout which took fully advantage of back-gate (back-biasing) were implemented and investigated. The final part was on characterizing the channel noise mechanism of these devices, which is departing from the thermal noise assumptions and espousing more the shot noise paradigm, which is important in semi-ballistic and ballistic transistors
Beckrich-Ros, Hélène. "Contribution à la caractérisation et à la modélisation de transistors bipolaires de puissance intégrés dans une filière BiCMOS submicronique." Bordeaux 1, 2006. http://www.theses.fr/2006BOR13260.
Full textTounsi, Mohamed. "Cyclage actif en mode MLI des modules de puissance IGBT application des SVM pour le diagnostic des défauts de vieillissement thermique." Caen, 2011. http://www.theses.fr/2011CAEN2082.
Full textThe work concerns the implementation of an SVM classifier (Support Vector Machine) for an automatic diagnosis of power IGBT module thermal ageing defects, based on thermoelectric measurements. This has required the development of an active cycling test bench for the characterization of the thermal tiredness of IGBT modules, the analysis of the degradations generated in their assembly, and the classification of their operating mode : in " healthy " mode and " degraded " mode. The strategy adopted for the thermal cycling, aims to reproduce the constraints imposed on the components during their real operation. We followed the module static and dynamic parameters in order to detect possible drifts, and thermoelectric parameters used as criteria of thermo-mechanical degradations in their assembly. The thermal stress caused mainly, earlier switching-on and switching-off modes and appearance of a tile-current. A failure analysis has revealed, in the component assembly, bond-wire lift-off, solder layer degradation, and surface dislocation of the gate and emitter metallizations. The implemented SVM classifier, allows to distinguish between an IGBT degraded operating mode and a healthy operating mode, for a preventive maintenance in electric installations where the continuity of service and safety are very important