Дисертації з теми "Perovskite photovoltaic cells"
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Kwak, Chankyu. "Improving the sustainability of organic and perovskite photovoltaic cells." Thesis, University of Sheffield, 2016. http://etheses.whiterose.ac.uk/15871/.
Повний текст джерелаBrivio, Federico. "Atomistic modelling of perovskite solar cells." Thesis, University of Bath, 2016. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.698992.
Повний текст джерелаMankowski, Trent, and Trent Mankowski. "Integrating Copper Nanowire Electrodes for Low Temperature Perovskite Photovoltaic Cells." Thesis, The University of Arizona, 2017. http://hdl.handle.net/10150/624135.
Повний текст джерелаSaliba, Michael. "Plasmonic nanostructures and film crystallization in perovskite solar cells." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:fdb36a9e-ddf5-4d27-a8dc-23fffe32a2c5.
Повний текст джерелаAlmora, Rodríguez Osbel. "Hysteresis and Capacitive Features of Perovskite Solar Cells." Doctoral thesis, Universitat Jaume I, 2020. http://hdl.handle.net/10803/669272.
Повний текст джерелаEn el presente trabajo se estudian por varios métodos las distorsiones anómalas en la característica de corriente-voltaje de las celdas solares de perovskita (PSC), típicamente llamada histéresis de J-V. Esto incluye experimentos dinámicos de J-V en modo de corriente continua (DC) y análisis de espectroscopía de impedancia (IS) en oscuridad y bajo iluminación. Las curvas J-V en oscuridad de las PSCs exhiben corrientes capacitivas, relacionadas con un exceso de capacitancia de baja frecuencia en los espectros de IS. Estas dos características están correlacionadas con la respuesta de iones móviles en regiones espaciales de carga hacia las interfaces. Los grandes valores de capacitancia bajo iluminación a frecuencias por debajo de las unidades de Hz se explicaron en términos de regiones de cargas espaciales de iones móviles y capacitancias químicas, suponiendo una proporcionalidad entre el número de iones móviles ionizados/activados y la concentración de portadores de carga y flujo de fotones.
Gheno, Alexandre. "Printable and printed perovskites photovoltaic solar cells for autonomous sensors network." Thesis, Limoges, 2017. http://www.theses.fr/2017LIMO0108/document.
Повний текст джерелаThis thesis is about the design of photovoltaic solar cells based on hybrid perovskite using inkjet printing technology. The first two chapters present the context of the thesis, namely the powering of an autonomous sensor network, and review the scientific aspects of inkjet and photovoltaic technologies. The third chapter presents the development of a state-of-the-art photovoltaic cell and its evolution towards a printable architecture at low annealing temperatures. The problem of the stability of photovoltaic cells with perovskite is also discussed. The last part presents the different aspects and problems of the inkjet printing of the three inner layers of a perovskite solar cell. At the end of this work the possibility of printing perovskite solar cells with efficiencies higher than 10% has been demonstrated, all in ambient conditions and at low temperature
Aranda, Alonso Clara. "Bulk and Interfacial Engineering to Enhance Photovoltaic Properties of Iodide and Bromide Perovskite Solar Cells." Doctoral thesis, Universitat Jaume I, 2019. http://hdl.handle.net/10803/668135.
Повний текст джерелаLas celdas solares de perovskita han alcanzado la primera línea de la tecnología fotovoltaica debido a las impresionantes eficiencias energéticas conseguidas, superando el 25% en la actualidad. Estos valores vienen acompañados de grandes avances como los métodos de depósito de los films a gran escala y a una mejora considerable en la estabilidad de estos dispositivos. Sin embargo, aún existen numerosas cuestiones que deben solucionarse para conseguir una comercialización real de esta tecnología. sta tesis doctoral aborda las cuestiones relacionadas precisamente con la estabilidad de los dispositivos bajo condiciones reales de operación, así como aquellas cuestiones relacionadas con las interacciones interfaciales. Para la consecución de ambos objetivos, dos formulaciones de perovskita han sido optimizadas con éxito: MAPbI3 y MAPbBr3. Junto con una amplia variedad de técnicas instrumentales de caracterización, tanto del bulk como de las regiones interfaciales, se ha desarrollado un método para la obtención de altas eficiencias bajo condiciones de humedad, así como la reducción de procesos de recombinación interfaciales que han permitido la obtención de valores récord de fotovoltage, alcanzanco los 1.6 V.
Dindault, Chloe. "Development of coevaporated hybrid perovskite thin films for solar cells applications." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLX079/document.
Повний текст джерелаHybrid perovskites celebrate this year their 10-year anniversary in the photovoltaic field. Besides the unprecedented rise in solar cells efficiencies, perovskite materials have tunable optical properties and can be manufactured at low cost, making them very promising candidates for the high efficiency, multijunction solar cells strategy. Perovskite crystal structure offers a relative degree of freedom, allowing the partial integration of multiple cations and halide ions. This chemical composition tuning translates into a bandgap tuning. Through fine chemical engineering, the 1.7 eV requirement for a c-Si-based tandem device can be achieved. Perovskite thin films can be prepared by a large variety of deposition techniques, from low cost precursors (CH3NH3I and PbI2 for instance), through low-temperature processes. While most of the reported works on perovskite thin films are based on the basic wet-process spincoating technique, this latter hardly allows large scale, homogeneous and reproducible deposition. With the future challenge of industrialization and the increasing interest for the Silicon/Perovskite tandem approach, solvent-free methods appear more suitable. Already widely implemented in the OLED industry, coevaporation stands as a viable option for perovskites’ future. Reported for the first time in 2013, coevaporated perovskites are still scarcely studied compared to wet-based techniques, requiring more expensive set ups. In the present thesis, we implemented and developed the coevaporation process to fabricate perovskite thin films for solar cells applications.Starting off on a proof-of-concept reactor to assess the feasibility of the technique, we got accustomed to the perovskite precursors behaviour and identify very early on the organic precursor to be hardly manageable, as reported in the literature. In six months, we were nonetheless able to obtain nice perovskite films leading to 9% efficient photovoltaic devices, unfortunately with a poor reproducibility that we think to be partially due to the cloud vapour behaviour of CH3NH3I. We eventually found ourselves missing some features on the equipment, preventing us from accurately get a grasp on the process. From this feedback we then designed, hand in hand with the manufacturer, a dedicated semi-industrial equipment for perovskite coevaporation. Following its implementation, we then focused on establishing the reproducibility of the method, trying to mitigate the parasitic effect of the organic compound. Even though the efficiencies in solar cells were still slightly lower for coevaporated perovskites, with respect to classical spincoated ones, we expected the material homogeneity to be in favour of the vacuum-based process. We then eventually integrated to this thesis a comparative study between wet- and dry-processed perovskite films using a Synchrotron-based X-ray spectromicroscopy technique
Rathod, Siddharth Narendrakumar. "Structure Stability and Optical Response of Lead Halide Hybrid Perovskite Photovoltaic Materials: A First-Principles Simulation Study." Wright State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=wright1496189488934021.
Повний текст джерелаBaig, Faisal. "Numerical analysis for efficiency enhancement of thin film solar cells." Doctoral thesis, Universitat Politècnica de València, 2019. http://hdl.handle.net/10251/118801.
Повний текст джерела[CAT] Des de fa una dècada s'està investigant intensament la forma de millorar l'eficiència de conversió d'energia (PCE) de les cèl·lules solars de silici (Si) i reduir els seus preus. No obstant això, tot i les millores obtingudes, la fabricació de cèl·lules solars de Si segueix sent costosa i pot rebaixar-se usant materials en forma de capa fina. Per això la recerca de materials absorbents alternatius, no tòxics, abundants en la naturalesa i amb bons rendiments de conversió s'ha intensificat en els últims anys. Entre els diferents materials absorbents, el sulfur d'estany (SnS), amb una banda prohibida de 1.3 eV propera a l'òptima, és un candidat adequat per a la conversió fotovoltaica. Però per a cèl·lules experimentals de SnS el rendiment assolit fins ara és de 4.6%, que és molt menor que el PCE per a dispositius de silici, mentre que entre altres cèl·lules híbrides (orgàniques-no orgàniques) com la perovskita de metilamonio de plom i iode ( MAPbI3) es demostra que és un candidat adequat amb PCE que arriba a un valor del 23%. A part de l'estabilitat, un dels problemes per a la comercialització de cèl·lules de MAPbI3 és la naturalesa tòxica del plom (Pb). Per aquest motiu, s'ha utilitzat l'anàlisi numèrica per revisar els paràmetres de disseny de les cèl·lules solars de perovskita híbrida substituint l'absorbent MAPbI3 per MASnI3 i estudiar l'efecte de la resta de paràmetres de disseny en el rendiment d'estes cèl·lules solars. Hi ha diversos programaris de simulació disponibles que s'utilitzen per a l'anàlisi numèric de cèl·lules solars. En aquest treball hem fem servir un programari anomenat "A Solar Cell Capacitance Simulator" (SCAPS), està disponible de forma gratuïta i és molt popular entre la comunitat científica i tecnològica. Per aconseguir un disseny efectiu per a una cèl·lula solar eficient, es va proposar una aproximació numèrica basada en la millora de la PCE d'una cèl·lula solar experimental. Això es va fer reproduint els resultats per a la cèl·lula solar dissenyada experimentalment en un entorn SCAPS amb estructura p-SnS / n-CdS amb una eficiència de conversió de l'1,5%. Després de reproduir els resultats experimentals, el rendiment del dispositiu es va optimitzar ajustant el gruix de la capa absorbent y de la capa tampó, el temps de vida dels portadors minoritaris, la concentració del dopatge en les capes absorbent, tampó i en la capa finestra. Mitjançant l'optimització gradual dels paràmetres del dispositiu, es va assolir un valor de 14.01% en PCE de cèl·lules solars dissenyades experimentalment en SCAPS amb arquitectura p-SnS / n-CdS / n-ZnO. A partir de l'anàlisi, es va trobar que la PCE d'una cèl·lula solar depèn en gran mesura de la concentració de dopatge de la capa absorbent, el gruix de la capa absorbent i els defectes de la interfície. D'altra banda, es va realitzar una anàlisi per determinar l'efecte de la recombinació de la interfície en el rendiment de les cèl·lules solars i com es pot controlar. Per realitzar aquesta tasca, es va realitzar una anàlisi per a la selecció de la capa tampó adequada per a la cèl·lula solar de perovskita de metilamoni d'estany i iode (MASnI3) i es va trobar que el PCE de la cèl·lula solar també depèn de l'alineació de la banda entre l'absorbidor i la capa de tampó.
[EN] A decade of extensive research has been conducted to enhance the power conversion efficiency (PCE) of silicon (Si) solar cells and to cut their prices short. But still, the fabrication of Si solar cells are costly. So, to reduce the fabrication cost of the solar cell search for alternate earth abundant and non-toxic absorber materials is thriving. Among different absorber materials tin sulfide (SnS) is found to be a suitable candidate for the non-organic solar cell with a band gap of 1.3 eV. But the PCE achieved for SnS is 4.6% that is far less from the PCE of (Si), whereas among other organic non-organic solar cells like methylammonium lead halide perovskite ({\rm MAPbI}_3) is proven to be a suitable candidate with PCE reaching to a value of 23%. The problem with the commercialization of {\rm MAPbI}_3 is due to the toxic nature of lead (Pb). So, in dealing with these issues of solar cell numerical analysis can play a key role as numerical analysis allows flexibility in the design of realistic problem and experimentation with different hypotheses can easily be performed. Complete set of device characteristic can often be easily generated by consuming less amount of time and effort. Because of this reason numerical analysis was used to revisit solar cells design parameters and the effect of solar cell physical parameters on solar cell performance. There are various simulation software's available that are used for solar cell numerical analysis. Here in this work, we used Solar cell capacitance simulator (SCAPS) software, it is freely available and is most popular among the research community. To achieve effective design for efficient solar cell a numerical guide was proposed based on which PCE of an experimental designed solar cell can be enhanced. This was done by reproducing results for the experimentally designed solar cell in SCAPS environment with structure p-SnS/n-CdS having a conversion efficiency of 1.5%. After reproduction of experimental results device performance was optimized by varying thickness of (absorber layer, buffer layer), minority carrier lifetime, doping concentration (absorber, buffer), and adding window layer. By stepwise optimization of device parameters, PCE of an experimental designed solar cell in SCAPS with architecture p-SnS/n-CdS/n-ZnO was reached to a value of 14.01%. From the analysis, it was found that PCE of a solar cell is highly depended upon doping concentration of the absorber layer, the thickness of the absorber layer and interface defects. Based on the results evaluated an analysis was performed for tin based organic non-organic methylammonium tin halide perovskite solar cell ({\rm MASnI}_3) to find the effect of interface recombination on solar cell performance and how it can be governed. The reason for this transition from SnS to {\rm MASnI}_3 was because {\rm MASnI}_3 can be fabricated simply by spin-coating methylammonium iodide (MAI) over SnS layer. To perform this task analysis was performed for the selection of suitable buffer layer for Pb free methylammonium tin halide perovskite solar cell ({\rm MASnI}_3) and it was found that PCE of the solar cell is also depended upon band alignment between absorber and buffer layer. Based on the results a new structure was proposed for Pb free perovskite solar cell (Back\ contact/{\rm MASnBr}_3/{\rm MASnI}_3/CdZnS/FTO) with PCE of 18.71% for absorber thickness of 500 nm and acceptor doping concentration of 1x10^{16}\ {\rm cm}^3. The results achieved in this thesis will provide an imperative guideline for researchers to design efficient solar cells.
Baig, F. (2019). Numerical analysis for efficiency enhancement of thin film solar cells [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/118801
TESIS
Pengpad, Atip. "Electron spectroscopy of surfaces and interfaces for novel solid state photovoltaic cells." Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/electron-spectroscopy-of-surfaces-and-interfaces-for-novel-solid-state-photovoltaic-cells(d4b15a1d-085c-497b-8b60-6b49987e6d12).html.
Повний текст джерелаAmlani, Parin Divya. "Configuration and Electronic Properties of the Interface between Lead Iodide Hybrid Perovskite and Self-assembled Monolayers in Solar Cells." Wright State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=wright1513855375235467.
Повний текст джерелаZhang, Jie. "Roles of the n-type oxide layer in hybrid perovskite solar cells." Thesis, Paris 6, 2015. http://www.theses.fr/2015PA066634/document.
Повний текст джерелаSolar energy is one of the most important resources in our modern life. Photovoltaic is the most important technology to render the solar energy usable since photovoltaic solar cells harvest light coming from sun and convert sunlight into electrical energy. Dye sensitized solar cells have gained widespread attention due to their low cost, easy fabrication technique and tunable choice for the device. A traditional DSSC device includes a dye-sensitized photo-anode, a counter electrode and an electrolyte containing a redox couple system and additives. To improve the device stability, the liquid electrolyte replacement by a solid state hole transport material has been studied in so-called solid-state dye sensitized solar cells (ssDSSCs). Recently, an amazing light perovskite absorber was introduced into the ssDSSC system to replace the dye, opening the new field of research. Perovskite solar cells (PSCs) open a new era in photovoltaic due to the low cost of this material and the high efficiency of these cells. The power conversion efficiency has risen from 3.8% to a certified 20.1% within a few years. The components in the perovskite solar cell include: the compact metal oxide blocking layer, the electron transport layer, the lead halide perovskite layer, the hole transport layer and the back contact. In this thesis, we focused on the preparation and improving the properties of the electron transport layer and the perovskite layer
Abdi, Jalebi Mojtaba. "Chemical modifications and passivation approaches in metal halide perovskite solar cells." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/283216.
Повний текст джерелаAlberola, Borràs Jaume Adrià. "Environmental Evaluation for the Development of Photovoltaic Devices Based on Halide Perovskite through Life Cycle Assessment." Doctoral thesis, Universitat Jaume I, 2021. http://dx.doi.org/10.6035/14107.2021.209673.
Повний текст джерелаPrograma de Doctorat en Tecnologies Industrials i Materials
ANUSIT, KAEWPRAJAK. "Improvement of Photovoltaic Properties of Solar Cells with Organic and Inorganic Films Prepared by Meniscuc Coating Technique." Kyoto University, 2019. http://hdl.handle.net/2433/242322.
Повний текст джерелаBouich, Amal. "Study and Characterization of Hybrid Perovskites and Copper-Indium-Gallium Selenide thin films for Tandem Solar Cells." Doctoral thesis, Universitat Politècnica de València, 2021. http://hdl.handle.net/10251/160621.
Повний текст джерела[EN] The thesis work presented is part of the work in the Laboratory of New Materials for Photovoltaic Energy in the main target to use low cost techniques for elaboration of Perovskite and Copper, indium, gallium, and selenium CIGS materials for photovoltaic application. Organic-inorganic lead halides perovskites have currently and exceptionally appeared as new materials for low cost thin film solar cells specially that the efficiency of perovskite based solar cell have jumped from 3.8% to 22.7% in short time.in other hand, CIGS solar cells record 23.35% efficiency and still can be boosted. Here, we report the elaboration and characterization of CIGS as well as methylammonium lead iodide perovskites MAPbI3 and formamidinuim iodide lead iodide perovskites FAPbI3 absorbers for perovskite-based solar cells and Tandem Perovskites/ CIGS. The thin films prepared were characterized by X-ray diffraction (XRD), Raman spectroscopy (RS), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) analysis, atomic force microscopy (AFM), transmission electron microscopy (TEM), Photoluminescence analysis (PL) and UV-Vis spectroscopy. The first stage was devoted for the effect of different parameters on the growth of CIGS by electrodeposition and we investigate the impact of different back contact in structural and optical proprieties. In a second stage, we report the growth of CIGS films by spray pyrolysis, we studied the effect of experimental parameter also the annealing process which is the key factor for improving the performance of solar cells,subsequently we elaborated different films constituted CdZnS/CdS/CIGS/Mo solar cells, the approach is to change the toxic ZnO by using a transparent, conductive CdZnS layer. In other hand, MAPbI3 film was investigated in order to optimize the chemical composition and to study the crystallization process also to get sight about the stability of perovskite materials to meet the requirement of their application as an active layer in perovskite solar cell. For this purpose. the MAPbI3 film surface was treated by adding diethyl ether antisolvent with different rates. during the treatment complex exchanges are appearing at the same time under the influence of quite a lot of physicochemical properties. A whole understanding of this topic is critically important for improving solar cell performance. MAPbI3 doped by the tetrabutylammonium TBA is boosting the formation of perovskite structure, leading to a higher orientation along the (110) and shows better crystallinity, large grain size, pinhole-free, which is suitable for the manufacturing of the optoelectronic devices with higher performance. Also, we have identified the impact of TBA in the photo-physical properties, we have noticed that the TBA improve the photoluminescence emission by reducing the density of trap states and the optical absorption indicates a significant shift to the lower wavelength and optical bandgap varied from 1.8 to 1.52 eV. Finally, the stability was explored for 5% TBA, it found that after 15 days the stability remained excellent in relative humidity of ~60%. These results would be helpful for realizing stable and high performance MAPbI3-based devices. Furthermore, we inspect the effect of monovalent cation substitution of Guanidinium (GA) on the structural and optical properties of FAPbI3 thin films perovskites. The ratio between the desirable a-phase and the undesirable y yellow phase is studied as a function of GA content. GA doping is shown to be efficient in the control of a/y phases ratio and then in the stabilization of the a-FaPbI3 phase. We qualitatively evaluate the impact of 10% of guanidinium on the phase composition and microstructure of films. The results show that an adequate amount of 10% GA:FaPbI3 leads to a homogeneous perovskite film with stable a phase, large grains, and free pinholes. 10% GA: FaPbI3 films demonstrate excellent stability after aging for 15 days in relative humidity of~60%.
[CA] L'objectiu principal d'aquesta tesi és contribuir a l'avanç de noves tècniques d'elaboració de baix cost, fent servir materials d'aliatges del tipus de coure, indi, gal·li i seleni (CIGS) i perovskites, per a aplicacions en energia solar fotovoltaica. El CIGS sembla ser adequat ja que són de baix cost de producció i s'han reportat eficiències de conversió del 23,35%. D'altra banda, les perovskites híbrides d'halurs de plom orgànics-inorgànics han aparegut com a nous materials excepcionals per cel·les solars, especialment perquè l'eficiència de les cel·les solars basades en perovskites ha augmentat del 3.8% al 22.7% en menys d'un lustre. En el present treball, reportem l'elaboració i caracterització de CIGS y de perovskitas de iodur de plom de metilamoni (MAPbI3) i de iodur de plom de formamidini (FaPbI3) per a les cèl·lules solars de CIGS i tàndem Perovskites/CIGS. En les capes de CIGS dipositades per electrodeposició es va investigar l'efecte dels diferents paràmetres sobre el procés d'electrodeposició, així com l'efecte del contacte posterior sobre les propietats estructurals i òptiques del CIGS. Ens trobem que el tipus de contacte posterior té un efecte significatiu en la posterior interpretació de pel·lícules primes CIGS. A més, vam estudiar la tècnica de polvorització de la piròlisi per produir pel·lícules de CIGS. Es va estudiar el procés de recuit, que és el factor clau per millorar el rendiment de les cèl·lules solars. Es van produir diferents pel·lícules fines formades pel nostre dispositiu CdZnS/CdS/CIGS/Mo que utilitzaven una capa conductiva CdZnS transparent per minimitzar l'alineació de la interfície. D'altra banda, es van investigar perovskites MAPbI3, amb la finalitat d'optimitzar la composició química i estudiar el procés de cristal·lització també per a conèixer l'estabilitat dels materials de perovskita. la cristal·lització s'aconsegueix alentint la solubilitat en una solució saturada mitjançant l'addició d'una quantitat diferent de l'antisolvent d'èter dietílic. Durant el tractament apareixen al mateix temps intercanvis complexos sota la influència de moltes propietats fisicoquímiques. Una comprensió completa d'aquest tema és de vital importància per a millorar el rendiment. Amb l'objectiu principal d'augmentar l'estabilitat de MAPbI3, el tetrabutilamoni (TBA) es pot incorporar a MAPbI3, impulsant la formació de l'estructura de perovskita, la qual cosa porta a una major orientació al llarg de (110). MAPbI3 dopades amb TBA presenten una millora de la cristalinitat, major grandària, la qual cosa és adequada per a la fabricació de dispositius optoelectròniques de major rendiment. A més, hem identificat l'impacte de TBA en les propietats foto físiques de MAPbI3. Hem notat que el dopatge amb TBA millora tant l'emissió de la fotoluminiscència en reduir la densitat dels estats de trampes com l'absorció òptica on apareix un canvi significatiu de la banda òptica prohibida cap a longituds d'ona més llargues que significa disminuir l'energia del gap, que va variar de 1.8 a 1.52 eV. Finalment, es va explorar l'estabilitat per les perovsquites dopades amb 5%TBA. Es va trobar que després de 15 dies l'estabilitat romania excel·lent en un humitat de 60%. A més, hem estudiat FAPbI3 com un dels materials de perovskita més atractius. Hem investigat l'efecte de la substitució de guanidini (GA) sobre les propietats estructurals i òptiques de FAPbI3. La relació entre la fase a de perovskita desitjable i la fase indesitjable y es va estudiar en funció del contingut de GA. Es mostra que el dopatge amb GA és eficaç en el control de la relació de fases a /y i després en l'estabilització de la fase a-FaPbI3. Els resultats mostren que una quantitat adequada de 10% GA condueix a una pel·lícula homogènia amb fase a estable, grans grans lliures de porus i forats. Les pel·lícules de 10% GA:FaPbI3 demostraren una excel·lent estabilitat després de l'envelliment durant 15 dies en un ambient humit (humitat relativa de 60%).
Bouich, A. (2020). Study and Characterization of Hybrid Perovskites and Copper-Indium-Gallium Selenide thin films for Tandem Solar Cells [Tesis doctoral]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/160621
TESIS
Puváková, Alžbeta. "Příprava a optimalizace perovskitových solárních článků." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2020. http://www.nusl.cz/ntk/nusl-433525.
Повний текст джерелаCimaroli, Alexander J. "Development of Deposition and Characterization Systems for Thin Film Solar Cells." University of Toledo / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1481295690696407.
Повний текст джерелаBerry, Florian. "Nanostructuration et cristaux photoniques à base de pérovskites hybrides pour applications photovoltaïques." Thesis, Lyon, 2020. http://www.theses.fr/2020LYSEC022.
Повний текст джерелаPerovskite material has many advantages: excellent optoelectronic properties, low raw material costs and a wide range of deposition techniques. This makes it a promising candidate for photovoltaic applications. Perovskite solar cells have seen their efficiency increase from 6% to 25% in less than 10 years. However, the perovskites present a direct gap, and the absorption in this material drops suddenly when the wavelength passes above λgap. Using photonic crystals based on periodic structures allow, to improve the absorption around the gap of the material. The objective of this thesis is to study the integration of a photonic crystal in a perovskite solar cell.We have first optimized the perovskite deposition process in order to obtain a uniform and continuous layer. Then, we have carried out different imprint tests on the layers. This process, by applying a pressure, makes it possible to structure a material according to the inverted shape of a mold. Two types of imprint have been studied and optimized: flat compression, which, using a flat mold, makes the perovskite less rough and allows to obtain a better crystallization; and nanoimprint, using a nano-structured mold. An increase in grain size compared to simple annealing of perovskite without imprint has also been noticed. For nanoimprint, we have tested and optimized the impact of pressure and temperature on the perovskite structuration. After development and optimization of this technique on perovskite, we have shown that it is applicable to a wide range of molds, with patterns of different sizes and dimensions. We were able to make a photonic crystal in the perovskite layer to improve its absorption. Finally, we have realized solar cells using the imprint process (flat compression and nanoimprint) applied on the perovskite layer. By obtaining a conversion efficiency for the two types of cells, we have demonstrated the feasibility of such cells
Huang, Yong. "Modélisation des cellules solaires pérovskites, des dispositifs optoélectroniques III-V et de la microscopie à sonde de Kelvin." Thesis, Rennes, INSA, 2018. http://www.theses.fr/2018ISAR0007/document.
Повний текст джерелаThis PhD work focuses on optoelectronic device simulations based on drift-diffusion models. Approaches are developed for the modelling of Kelvin Probe Force Microscopy (KPFM), perovskite-based solar cells (PSCs), perovskite/silicon tandem solar cells and lll-V/GaP quantum dots (ODs). Firstly, a new approach for the modelling of KPFM is applied to TiOx slabs and to the MAPbI3 perovskite absorber. Secondly, KPFM measurements and simulations are proposed for silicon-based diffused junctions and mesoporous TiOx based PSCs. The built-in potential is investigated, and this study paves the way toward fu rther device improvements. In addition, the influence of the surface of WO. slabs on KPFM measurements is studied theoretically. Various facto rs influencing open circuit voltage (Voe) losses in PSCs are discussed. The abnormal hysteresis effect in the PSCs is simulated as well, considering interface trap states and mobile ions. The design of two-terminal perovskite/silicon tandem solar cells is studied in detail. A siliconbased tunnel junction between the top and the bottom subcells is proposed for serial current matching. The influence of the doping profile in the tunnel junction is discussed. At the end of the manuscript, the carrier transport in III-V/GaP QDs is investigated, for the integration of III-V emitters on silicon. The electroluminescence and electrical characteristics of these III -V light emitting devices are simulated by using a cylindrical approximation
Aversa, Pierfrancesco. "Primary Defects in Halide Perovskites : Effect on Stability and Performance for Photovoltaic Applications Effect of organic PCBM Electron transport Layers on natural and post-irradiation ageing of optical absorption and emission in methyl ammonium lead triiodide spin –coated on p-i-n Solar Sell Substrates Effect of organic PCBM Electron transport Layers on natural and post-irradiation ageing of optical absorption and emission in triple cation lead mixed halide perovskite spin –coated on p-i-n Solar Sell Substrates Electron Irradiation Induced Ageing Effects on Radiative Recombination Properties of methylammonium lead triiodide layers on p-i-n solar cell substrates Electron Irradiation Induced Ageing Effects on Methylammonium Lead Triiodide Based p-i-n Solar Cells Electron Irradiation Induced Ageing Effects on Radiative Recombination Properties of Quadruple Cation Organic-Inorganic Perovskite Layers." Thesis, Institut polytechnique de Paris, 2020. http://www.theses.fr/2020IPPAX050.
Повний текст джерелаDuring the last eleven years, Hybrid Organic Inorganic Perovskites (HOIPs) materials have emerged as an exciting topic of research for potential application in solar cell technologies due to their outstanding optoelectronic properties and processing advantages. However, HOIPs materials suffer from several drawbacks with, in peculiar, their lack of stability under operational conditions (light, bias, environment…). To improve this stability is one of the biggest challenges to be addressed before commercialization. The general formula for HOIPs is (A1,A2,A3,A4)Pb(X1,X2)3, where the A sites can be occupied by a distribution of 1 to 4 metallic/organic cations and X sites with halide anions. The role of native vacancy defects has been questioned as a possible cause for HOIPs solar cells degradation. The aim of this work is to understand the defect role in long term stability of HOIPs materials for photovoltaics. For this reason, primary defects were introduced in a controlled way via high energy electron irradiation (1MeV) in sets of layers and solar cells (SCs) fabricated using various HOIPs compounds. Those include the photovoltaic HOIPs prototype, MAPbI3 (A1PbX13), and emergent triple or quadruple cation mixed halide HOIPs, (CsMAFA)Pb(I1-xBrx)3 (A3PbX23) or (GACsMAFA)Pb(I1-yBry)3 (A4PbX23). The HOIPs layers are fabricated according to the same procedure as the HOIPs active SC layers and, subsequently, treated in similar conditions. For A1PbX13 and A3PbX23, the solar cells are of the p-i-n structure with organic hole and electron transport layer (HTL/ETL). The HOIPs layers are deposited on the glass/ITO/HTL (PEDOT:PSS) substrate without or with the top ETL layer (PCBM). For A4PbX23, the solar cells are of the n-i-p type with inorganic ETL (TiO2) and organic HTL (Spiro-OMeTAD) layers. The layers are directly deposited on glass without the ETL layer.Positron Annihilation Spectroscopy (PAS) gives direct evidence for native vacancy-type defects and irradiation induced ones in layers of each HOIP compound. The energy dependence of absorbance shows that natural and after irradiation ageing generates different defect populations in each HOIP compound. These populations strikingly also differ depending on the absence or presence of the top ETL layer for the A1PbX13 and A3PbX23 compounds. The defect populations evolve over ageing duration as long as 3 months. The prominent effects of ageing include (i) band gap modification, (ii) tailing of conduction/valence band extrema and (iii) optical absorption via deep subgap electronic levels. Illumination effects under laser also vary with ageing for each HOIP compound. Asymmetric photoluminescence (PL) peaks in each compound under continuous laser illumination reflect that radiative emission involves Gaussian emission rays with energy, FWHM and height evolving with illumination time. The emission transitions involve shallow localized electronic levels in A3PbX23 and A4PbX23 and resonant ones in A1PbX13. These electronic levels are attributed to specifically illumination-induced defect populations. Natural and after irradiation ageing result in PL decay lifetime spectra resolved into one or two exponential decay components. The decay components number and lifetime are strongly affected by the initial production of irradiation defects and HOIPs composition. Such effects last over 3 months at least in A4PbX23. The p-i-n solar cells exhibit most striking irradiation ageing induced photovoltaics performance. The External Quantum Efficiency (EQE versus photon energy) and the photovoltaic performance (I-V under illumination) of the irradiated solar cells have higher values than those in the reference SCs after 6 to 12 months of ageing. This gives evidence that defect engineering via high energy electron irradiation has a potential for providing innovative processing pathways to enhance the long-term stability of HOIPs photovoltaic performance
Carrier, Nathalie. "Indoor photovoltaics with Perovskite solar cells and nanostructured surfaces." Thesis, KTH, Tillämpad fysik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-181078.
Повний текст джерелаWojciechowski, Konrad. "Electron selective contact in perovskite solar cells." Thesis, University of Oxford, 2016. https://ora.ox.ac.uk/objects/uuid:0fa3b171-4db3-43d7-9950-1ef338874376.
Повний текст джерелаNakar, Rana. "Synthèse et caractérisation de nouveaux verres moléculaires de type p dérivés de carbazole pour cellules solaires pérovskite." Electronic Thesis or Diss., Tours, 2018. http://www.theses.fr/2018TOUR4033.
Повний текст джерелаThe sun is the most important source of renewable energy. Over the last 10 years, perovskite solar cells have shown a tremendous interest with efficiencies above 22%. This PhD work has consisted in elaborating new molecular glasses, hole transporting materials, based on carbazole moiety to replace spiro-OMeTAD (reference material) in perovskite solar cells. First, the elaboration of p type semiconductors has been optimized by synthesizing, from a carbazole based intermediate called “synthon”, in only one step, 4 new families of molecules constituted of one, two or three synthons. Cores based on spirobifluorene derivatives, thiophenes, triaxatruxenes or fluorinated spacer have been used. The physicochemical properties have then been studied in order to confirm that they can be used in solar devices and to find a structure/properties relationship. For example, we showed that the Tg of the materials are clearly depending on the rigidity of the chemical structure of the core. Thermal, electronic and energetic measurements are showing that the whole families possess suitable properties to be used as HTM in perovskite solar cells. Finally, these materials have been integrated in solar devices and have shown promising results either in terms of efficiencies (between 13% and 15%), similar to the commercially available material, or in terms of price (the cost is at least twice cheaper than the reference)
Hossain, Ihteaz Muhaimeen [Verfasser], and U. W. [Akademischer Betreuer] Paetzold. "Semitransparent perovskite solar cells for perovskite-based tandem photovoltaics / Ihteaz Muhaimeen Hossain ; Betreuer: U. W. Paetzold." Karlsruhe : KIT-Bibliothek, 2021. http://d-nb.info/1230475745/34.
Повний текст джерелаHenek, Tomáš. "Charakterizace vlastností perovskitovských fotovoltaických článků." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2018. http://www.nusl.cz/ntk/nusl-376942.
Повний текст джерелаTambwe, Kevin. "P- and e- type Semiconductor layers optimization for efficient perovskite photovoltaics." University of Western Cape, 2019. http://hdl.handle.net/11394/7414.
Повний текст джерелаPerovskite solar cells have attracted a tremendous amount of research interest in the scientific community recently, owing to their remarkable performance reaching up to 22% power conversion efficiency (PCE) in merely 6 to 7 years of development. Numerous advantages such as reduced price of raw materials, ease of fabrication and so on, have contributed to their increased popularity.
Noel, Nakita K. "Advances in hybrid solar cells : from dye-sensitised to perovskite solar cells." Thesis, University of Oxford, 2014. https://ora.ox.ac.uk/objects/uuid:e0f54943-546a-49cd-8fd9-5ff07ec7bf0a.
Повний текст джерелаVallés, Pelarda Marta. "Different approaches to improve perovskite-based photovoltaic and optoelectronic devices." Doctoral thesis, Universitat Jaume I, 2022. http://dx.doi.org/10.6035/14104.2022.368259.
Повний текст джерелаPrograma de Doctorat en Ciències
Hrbková, Silvie. "Studium degradace perovskitových solárních článků." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2018. http://www.nusl.cz/ntk/nusl-376869.
Повний текст джерелаRedorici, Lisa. "Efficiency limits for silicon/perovskite tandem solar cells: a theoretical model." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/9531/.
Повний текст джерелаHosseinian, Ahangharnejhad Ramez. "Fabrication of Perovskite Solar Cells & Applications in Multijunction Configurations." University of Toledo / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1575980394222122.
Повний текст джерелаWeber, Oliver. "Structural chemistry of hybrid halide perovskites for thin film photovoltaics." Thesis, University of Bath, 2018. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.761012.
Повний текст джерелаShi, Tingting. "Optoelectronic and Defect Properties in Earth Abundant Photovoltaic Materials: First-principle Calculations." University of Toledo / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1418391935.
Повний текст джерелаLee, Michael M. "Organic-inorganic hybrid photovoltaics based on organometal halide perovskites." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:9384fc54-30de-4f0d-86fc-71c22d350102.
Повний текст джерелаDvořák, Tomáš. "Studium změny vlastností perovskitovských fotovoltaických článků za dobu jejich života." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-319629.
Повний текст джерелаKvapil, Jakub. "Časové změny vlastností fotovoltaických článků." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2018. http://www.nusl.cz/ntk/nusl-377151.
Повний текст джерелаSola, Margherita. "Optoelectronic properties of LaVO3 perovskite for photovoltaic applications investigated by surface potential measurements." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/10716/.
Повний текст джерелаErbing, Axel. "In pursuit of next generation photovoltaics : An electronic structure study of lead-free perovskite solar cells." Licentiate thesis, Stockholms universitet, Fysikum, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-181608.
Повний текст джерелаWang, Kai. "HIGH PERFORMANCE SOLUTION-PROCESSED PEROVSKITE HYBRIDSOLAR CELLS THROUGH DEVICE ENGINEERING AND NOVEL." University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1489066286671653.
Повний текст джерелаQuattropani, Alessandro. "Synthesis of ferroelectric oxides for photovoltaic applications." Thesis, Strasbourg, 2018. http://www.theses.fr/2018STRAD053/document.
Повний текст джерелаIn this work, we have produced Bi2FeCrO6 oxides (BFCO) by sol-gel technique and pulsed laser deposition (PLD). By sol-gel, precursors in solution were prepared, which are then deposited by centrifugation on silicon or quartz substrates. The numerous structural (XRD) and optical images (SEM, TEM) analyses carried out on these BFCO films show that the films are fairly homogeneous but exhibit many parasitic phases, which they can be partly eliminated by rapid thermal annealing. Finally, we present the first results obtained on BFCO-SG perovskite devices. On the other hand, BFCO films were deposited on STO and Nb:STO substrates. Their structural, optical and electrical properties are presented. High-quality epitaxial growth and pure-phase films are demonstrated by X-ray diffraction. We show that the band gap of the PLD-BFCO films can be tuned from 1, 9 to 2.6 eV thanks to the variation of growth conditions. Theoretical calculations has confirmed the observed behavior and highlight the importance of the ordering phase. The ferroelectric properties of the PLD films are studied by the piezoresponse force microscopy. Illumination is shown to have a strong effect on polarization. We show that the polarization memory affects the photovoltaic response. Finally, devices based on BFCO are manufactured and their photovoltaic properties are analyzed
Ndzimandze, Samkeliso Sanele. "The synthesis and characterization of mixed-organic-cations tin halide perovskites for enhanced photovoltaic cell application." University of the Western Cape, 2018. http://hdl.handle.net/11394/6776.
Повний текст джерелаIn this research, novel hybrid perovskite materials were synthesized, characterized and applied in photovoltaic cells (PVCs) to enhance the performance of PVCs. Mixed-organic-cations tin halide perovskites (MOCTPs) were successfully synthesized using sol-gel method. These MOCTPs include guanidinium dimethylammonium tin iodide ([GA][(CH3)2NH2]SnI3) and guanidinium ethylmmonium tin iodide ([GA][CH3CH2NH3]SnI3). The MOCTPs were studied in comparison to their single-organic-cation tin perovskites (SOCTPs), which include guanidinium tin iodide (GASnI3), ethylammonium tin iodide ([CH3CH2NH3]SnI3) and dimethylammonium tin iodide [(CH3)2NH2]SnI3. High Resolution Scanning Electron Microscopy (HR SEM) of the five perovskite materials showed good crystallinity and tetragonal and hexagonal cubic shapes, characteristic of perovskites. These shapes were also confirmed from High Resolution Transmission Electron Microscopy (HR TEM), and the internal structure of the perovskites gave similar zone axes (ZAs) with those obtained from X-ray Diffraction (XRD). XRD showed tetragonal lattice shape for these perovskite materials. Fourier Transform Infrared (FTIR) demonstrated similar functional groups for both the SOCTPs and MOCTPs. FTIR bands that were observed are; N-H, C-H sp3, C-H aldehyde, N-H bend, C-N sp3 and N-H wag. From the 13C Nuclear Magnetic Resonance (NMR) results, the carbon atom of guanidinium iodide precursor shifts from downfield to upfield position, e.g. from 110.57 ppm to 38.49 ppm in GASnI3 SOCTP. This confirms a shift upfield of the carbon atom in guanidinium iodide precursor as it bonded to Sn metal in the perovskite chemical structure. Similar behavior was also observed for the NMR spectra of [GA][CH3CH2NH3]SnI3 MOCTP, where C-2 and C-3 atoms of ethylammonium iodide precursor shifted upfield from 37.03 ppm to 15.69 ppm and 16.06 ppm to 14.39 ppm respectively.
Poláková, Simona. "Příprava perovskitových solárních článků se standardní n-i-p strukturou a jejich optimalizace." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2021. http://www.nusl.cz/ntk/nusl-444539.
Повний текст джерелаLini, Matilde. "Optoelectronic characterization of hybrid organic-inorganic halide perovskites for solar cell and X-ray detector applications." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/23213/.
Повний текст джерелаWehrenfennig, Christian. "Ultrafast spectroscopy of charge separation, transport and recombination processes in functional materials for thin-film photovoltaics." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:1f812413-4a2f-418f-a7fd-d749e88cc2e1.
Повний текст джерелаSong, Zhaoning. "Solution Processed High Efficiency Thin Film Solar Cells: from Copper Indium Chalcogenides to Methylammonium Lead Halides." University of Toledo / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470403462.
Повний текст джерелаUllah, Habib. "First-principles density functional theory study of novel materials for solar energy conversion and environment applications." Thesis, University of Exeter, 2018. http://hdl.handle.net/10871/32949.
Повний текст джерелаArnaldo, Ana Rita Oliveira. "Relating Photoluminescence of Perovskite Solar Cells to their Photovoltaic Behavior." Master's thesis, 2016. https://hdl.handle.net/10216/88366.
Повний текст джерелаArnaldo, Ana Rita Oliveira. "Relating Photoluminescence of Perovskite Solar Cells to their Photovoltaic Behavior." Dissertação, 2016. https://hdl.handle.net/10216/88366.
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