Bibliografias temáticas / Organic Hole transporting materials

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Literatura científica selecionada sobre o tema "Organic Hole transporting materials"

Autor: Grafiati
Publicado: 1 de fevereiro de 2025

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Artigos de revistas sobre o assunto "Organic Hole transporting materials"

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Świst, Agnieszka, Jadwiga Sołoducho, Przemysław Data e Mieczysław Łapkowski. "Thianthrene-based oligomers as hole transporting materials". Arkivoc 2012, n.º 3 (24 de janeiro de 2012): 193–209. http://dx.doi.org/10.3998/ark.5550190.0013.315.

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Namespetra, Andrew M., Arthur D. Hendsbee, Gregory C. Welch e Ian G. Hill. "Development of simple hole-transporting materials for perovskite solar cells". Canadian Journal of Chemistry 94, n.º 4 (abril de 2016): 352–59. http://dx.doi.org/10.1139/cjc-2015-0427.

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Three low-cost propeller-shaped small molecules based on a triphenylamine core and the high-performance donor molecule 7,7′-[4,4-bis(2-ethylhexyl)-4H-silolo[3,2-b:4,5-b′]dithiophene-2,6-diyl]bis[6-fluoro-4-(5′-hexyl-[2,2′-bithiophen]-5-yl)benzo[c][1,2,5]thiadiazole] (DTS(FBTTh2)2) were investigated as hole-transporting materials in perovskite solar cells. Each hole-transporting material was designed with highly modular side arms, allowing for different bandgaps and thin-film properties while maintaining a consistent binding energy of the highest occupied molecular orbitals to facilitate hole extraction from the perovskite active layer. Perovskite solar cell devices were fabricated with each of the three triphenylamine-based hole-transporting materials and DTS(FBTTh2)2 and were compared to devices with 2,2′,7,7′-tetrakis(N,N-di-p-methoxyphenylamine)-9,9′-spirobifluorene (spiro-OMeTAD) hole-transporting layers. Each of our triphenylamine hole-transporting materials and DTS(FBTTh2)2 displayed surface morphologies that were considerably rougher than that of spiro-OMeTAD; a factor that may contribute to lower device performance. It was found that using inert, insulating polymers as additives with DTS(FBTTh2)2 reduced the surface roughness, resulting in devices with higher photocurrents.
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Zhao, Xiaojuan, e Mingkui Wang. "Organic hole-transporting materials for efficient perovskite solar cells". Materials Today Energy 7 (março de 2018): 208–20. http://dx.doi.org/10.1016/j.mtener.2017.09.011.

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Cho, Young Joon, Min Ji Jeong, Ji Hye Park, Weiguang Hu, Jongchul Lim e Hyo Sik Chang. "Charge Transporting Materials Grown by Atomic Layer Deposition in Perovskite Solar Cells". Energies 14, n.º 4 (22 de fevereiro de 2021): 1156. http://dx.doi.org/10.3390/en14041156.

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Charge transporting materials (CTMs) in perovskite solar cells (PSCs) have played an important role in improving the stability by replacing the liquid electrolyte with solid state electron or hole conductors and enhancing the photovoltaic efficiency by the efficient electron collection. Many organic and inorganic materials for charge transporting in PSCs have been studied and applied to increase the charge extraction, transport and collection, such as Spiro-OMeTAD for hole transporting material (HTM), TiO2 for electron transporting material (ETM) and MoOX for HTM etc. However, recently inorganic CTMs are used to replace the disadvantages of organic materials in PSCs such as, the long-term operational instability, low charge mobility. Especially, atomic layer deposition (ALD) has many advantages in obtaining the conformal, dense and virtually pinhole-free layers. Here, we review ALD inorganic CTMs and their function in PSCs in view of the stability and contribution to enhancing the efficiency of photovoltaics.
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Jia, Haoran, Huanyu Ma, Xiangyang Liu, Donghui Xu, Ting Yuan, Chao Zou e Zhan'ao Tan. "Engineering organic–inorganic perovskite planar heterojunction for efficient carbon dots based light-emitting diodes". Applied Physics Reviews 9, n.º 2 (junho de 2022): 021406. http://dx.doi.org/10.1063/5.0085692.

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When it comes to building high-efficiency thin-film optoelectronic devices, we are constantly striving to improve the efficiency of charge transport and injection. Device performance is hampered by the low mobility and injection ability of organic charge transporting materials that are routinely used. In this paper, we show that instead of using organics as a hole transporting layer, metal halide perovskite can be used to fabricate high-efficiency carbon dots-based light-emitting diodes for the first time. The organic light-emitting layer and the underlying perovskite layer combine to form an organic–inorganic perovskite planar heterojunction, and the sufficient contact at the junction takes advantage of the high charge mobility of perovskite, facilitating the hole transportation and injection. Moreover, the interaction between perovskite and the organic emitting layer can be engineered via manipulating the halogenic component, thickness, surface morphology, etc., contributing to the device optimization and the understanding of the carrier kinetics in this unique organic–inorganic hybrid optoelectronic device. Our work comprehensively evaluates the full potentials of metal halide perovskite as a hole transporting layer by uncovering the positive effect on hole transportation and injection. As a consequence, our findings open up new avenues for the development of efficient carbon dot-based light-emitting diodes.
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Shahnawaz, Shahnawaz, Sujith Sudheendran Swayamprabha, Mangey Ram Nagar, Rohit Ashok Kumar Yadav, Sanna Gull, Deepak Kumar Dubey e Jwo-Huei Jou. "Hole-transporting materials for organic light-emitting diodes: an overview". Journal of Materials Chemistry C 7, n.º 24 (2019): 7144–58. http://dx.doi.org/10.1039/c9tc01712g.

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Mehdi, S., R. Amraoui e A. Aissat. "Numerical investigation of organic light emitting diode OLED with different hole transport materials". Digest Journal of Nanomaterials and Biostructures 17, n.º 3 (1 de agosto de 2022): 781. http://dx.doi.org/10.15251/djnb.2022.173.781.

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In this paper, a comparative study between four OLEDs devices is carried out. The bi- layers device (A) (consists of) Hole Injection Layer (HIL)/Electron Transport Layer (ETL), the multilayer device (B) (consists of) HIL Layer/Hole Transport Layer (HTL)/ETL Layer. The influence of the hole transporting material on the performance of the three layers OLEDs was investigated. Three different HTL materials were used: α- NPD, TAPC and p-TTA with the same electron transporting material as Alq3; (these holes transport material consists the devices (B), (C) and (D) respectively). The carrier injection, Langevin recombination rate, singlet exciton density and the power of luminescent are demonstrated. The simulation results shows that the insertion of a thin HTL layer between HIL and ETL layers increases the characteristics of the device (B)as: 6.19.1025 cm-3s-1 of the Langevin recombination rate, 1.16.1015cm-3 of the singlet exciton density and 0.04232 W/μm2 of the luminescence power. Moreover, the insertion of TAPC as HTL material gives rise to 1.36.1026 cm-3s-1 of the Langevin recombination rate, 2.1015cm-3 of the singlet exciton density and 0.075 w/μm2 of the luminescence power.
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Pham, Hong Duc, Terry Chien‐Jen Yang, Sagar M. Jain, Gregory J. Wilson e Prashant Sonar. "Hole Transporting Materials: Development of Dopant‐Free Organic Hole Transporting Materials for Perovskite Solar Cells (Adv. Energy Mater. 13/2020)". Advanced Energy Materials 10, n.º 13 (abril de 2020): 2070057. http://dx.doi.org/10.1002/aenm.202070057.

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Yuqiu, Qu, Zhang Liuyang, An Limin e Wei Hong. "Investigation on photoluminescence quenching of CdSe/ZnS quantum dots by organic charge transporting materials". Materials Science-Poland 33, n.º 4 (1 de dezembro de 2015): 709–13. http://dx.doi.org/10.1515/msp-2015-0120.

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AbstractThe effect of different organic charge transporting materials on the photoluminescence of CdSe/ZnS core/shell quantum dots has been studied by means of steady-state and time-resolved photoluminescence spectroscopy. With an increase in concentration of the organic charge transporting material in the quantum dots solutions, the photoluminescence intensity of CdSe/ZnS quantum dots was quenched greatly and the fluorescence lifetime was shortened gradually. The quenching efficiency of CdSe/ZnS core/shell quantum dots decreased with increasing the oxidation potential of organic charge transporting materials. Based on the analysis, two pathways in the photoluminescence quenching process have been defined: static quenching and dynamic quenching. The dynamic quenching is correlated with hole transporting from quantum dots to the charge transporting materials.
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Chooppawa, Tianchai, Supawadee Namuangruk, Hiroshi M. Yamamoto, Vinich Promarak e Paitoon Rashatasakhon. "Synthesis, characterization, and hole-transporting properties of benzotriazatruxene derivatives". Journal of Materials Chemistry C 7, n.º 47 (2019): 15035–41. http://dx.doi.org/10.1039/c9tc04155a.

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Teses / dissertações sobre o assunto "Organic Hole transporting materials"

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Maruzzo, Valentina. "Synthèse de Hole Transporting Materials (HTM) stables pour le photovoltaïque hybride émergent". Electronic Thesis or Diss., Pau, 2024. http://www.theses.fr/2024PAUU3082.

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Les cellules solaires à base de pérovskite (PSC) ont connu une évolution rapide de leurs performances. Aujourd'hui, un rendement de conversion d'énergie (PCE) record de plus de 26 % peut être atteint pour les PSC simples, et de plus de 29,5 % pour les configurations en tandem. La pérovskite (PSK) possède de fortes propriétés d'absorption de la lumière et une grande mobilité des porteurs de charge. Lors de l'absorption de la lumière, des électrons et des trous sont générés et drainés vers les électrodes correspondantes grâce aux deux couches entourant la PSK : la couche de transport des trous et la couche de transport des électrons. Cependant, l'instabilité des PSC face aux facteurs environnementaux externes, tels que l'humidité, entrave leur production industrielle. C'est pourquoi le développement de matériaux transporteurs de trous (HTM) capables de transporter efficacement les charges sans avoir recours à des dopants - des molécules hautement hygroscopiques qui accélèrent la dégradation des PSK - est crucial pour permettre leur mise à l'échelle.L'objectif de cette recherche est la synthèse de nouveaux HTM stables, capables de transporter efficacement les charges en l'absence de dopants. Le carbazole (C) et la phénothiazine (P) ont été choisis comme principales « briques », en raison de leur faible coût et de leurs propriétés électroniques réglables. Une première génération de HTMs avec une N-alkylation a été synthétisée, comprenant de petites molécules (Université de Turin), des oligomères et des polymères (Université de Pau). L'alkylation de C et P visait à augmenter l’hydrophobicité des HTM, à protéger la couche de PSK contre l'humidité et à améliorer l'aptitude au traitement des matériaux. Deux petites molécules de structure opposée (PCP et CPC) et plusieurs polymères ont été conçus et synthétisés par une réaction de couplage Suzuki-Miyaura. En outre, des polymères fonctionnalisés en bouts de chaîne, ont été produits pour obtenir une plus grande stabilité une fois mis en œuvre dans les cellules solaires. En effet, cette fonctionnalisation des extrémités permet des réactions de réticulation (induites par la lumière ou la chaleur) après dépôt de la couche HTM dans les cellules solaires. Le processus permet une augmentation de la performance et de la robustesse des PSC. La structure et les propriétés optoélectroniques et électrochimiques des matériaux synthétisés ont été étudiées afin d'évaluer la pertinence de leur utilisation dans les cellules solaires.Les PSC ont été assemblées à CHOSE, Université de Rome « Tor Vergata », en utilisant une architecture p-i-n pour les cellules solaires. Les petites molécules ont présenté des rendements prometteurs, avec des PCE supérieurs à 10 % (14 % pour le PCP dans les conditions optimisées). Cependant, de faibles valeurs de mobilité des trous ont été mesurées par des transistors organiques à effet de champ ; en outre, les analyses GIWAXS et WAXS ont révélé le comportement amorphe des molécules. En comparaison, les polymères ont présenté un PCE plus faible, principalement lié à une faible mouillabilité de leur couche, ce qui empêche la formation d'une couche PSK homogène.Pour améliorer encore les propriétés des HTM, nous avons étudié deux types de modifications de l’assemblage. En effet, des chaînes latérales plus courtes ont été sélectionnées pour augmenter la cristallinité des molécules et permettre des capacités de transport de charge plus élevées. D'autre part, des chaînes latérales d'éthylène glycol ont été insérées pour doter les molécules d'une capacité de passivation vis-à-vis des défauts PSK. Les deux dérivations ont donné lieu à de petites molécules présentant une bonne solubilité, tandis que les polymères ont nécessité l'insertion de chaînes latérales de tétra-éthylène glycol pour garantir une bonne solubilité. Les matériaux les plus prometteurs seront testés prochainement dans des PSC afin de permettre une comparaison complète entre tous les dérivés
Perovskite based Solar Cells (PSCs) witnessed a fast progress in their performances. Nowadays, a record power conversion efficiency (PCE) of over 26% can be reached for simple PSCs, and over 29.5% for tandem configurations. Perovskite (PSK) possesses strong light-absorption properties and high charge-carrier mobility. Upon light absorption, excited electrons and holes are generated, and drained to the corresponding electrodes thanks to the two layers surrounding the PSK: the hole transporting layer and the electron transporting layer. However, the instability of PSCs towards external environmental factors, such as humidity, hampers their industrial production. For this reason, the development of Hole Transporting Materials (HTMs) able to efficiently transport the charges without the need for dopants - highly hygroscopic molecules that accelerate the PSK degradation - is crucial to allow their upscaling.The objective of the PhD research is the synthesis of new stable HTMs, able to efficiently transport the charges in the absence of dopants. Carbazole (C) and phenothiazine (P) were chosen as main scaffolds, according to their low cost and tuneable electronic properties. A first-generation of HTMs with hexyl N-functionalisation was synthesised, comprising small molecules (University of Turin), oligomers and polymers (University of Pau). The alkylation of C and P aimed to increase the hydrophobicity of the HTMs, protecting the PSK layer against humidity and improving the processability of the materials. Two small molecules with opposite structure (PCP and CPC) and several polymeric HTMs were designed and synthesised through a Suzuki-Miyaura coupling reaction (using classical heating or microwave activation). In addition, end-capped polymers have been produced to achieve higher stability once implemented in solar cells. Indeed, the end-capping allows cross-linking reactions (induced by light or heat) once deposited as a layer in solar cells. The process led to a reticulated network, responsible for an increase in the performance and robustness of the PSCs. The structure and the optoelectronic and electrochemical properties of the synthesised materials were studied to assess the suitability of their use in solar cells.PSCs were assembled at CHOSE, University of Rome "Tor Vergata", using a p-i-n architecture for the solar cells. The small molecules displayed promising efficiencies, with PCE exceeding 10% (14% for PCP in the optimised conditions). However, low hole mobility values were measured by Organic Field-Effect Transistors; furthermore, GIWAXS and WAXS analyses revealed the amorphous behaviour of the molecules. In comparison, polymers presented lower PCE, mostly linked to a scarce wettability of their layer, which hinders the formation of a homogeneous PSK layer on top of it.To further improve the properties of the HTMs, we investigate two types of scaffold modifications. Indeed, shorter side chains were selected to increase the crystallinity of the molecules and allow higher charge transport abilities through better stacking. On the other hand, ethylene glycol side chains were inserted to provide the molecules with passivation ability towards PSK defects to increase the PCE. Both derivatisations resulted in small molecules with good solubility, whereas polymers required the insertion of tetra-ethylene glycol side chains to ensure proper solubility. The most promising materials will be tested shortly in PSCs to allow a complete comparison among all the derivatives
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Pham, Hong Duc. "Improvement of perovskite solar cells performance and stability via molecular engineering using newly developed organic hole transporting materials". Thesis, Queensland University of Technology, 2020. https://eprints.qut.edu.au/197683/1/Hong%20Duc_Pham_Thesis.pdf.

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This thesis is a study regarding the development of novel dopant-free organic hole transporting materials for more stable and highly efficient perovskite solar cells. In this study, several small molecules have been developed with desirable properties such as high purity, good solubility, suitable energy levels, high thermal ability and amorphous nature. Interestingly, these organic semiconductors can be utilized in organic light-emitting diode devices. The series of newly developed organic compounds pave the way for dual role of a material in organic light emitting diodes and perovskite solar cells applications.
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Delices, Annette. "Organized Organic Dye / Hole Transporting Materials for TiO2- and ZnO- based Solid-State Dye-Sensitized Solar Cells (s-DSSCs)". Thesis, Sorbonne Paris Cité, 2017. http://www.theses.fr/2017USPCC066/document.

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En raison des problèmes d'instabilité à moyen termes des cellules solaires à colorant (DSSC), l'électrolyte liquide à base d'iodure a été remplacé par plusieurs types de matériaux solides transport de trous (HTM) pour obtenir des DSSCs à l'état solide (s-DSSCs). Parmi ces matériaux, l’utilisation des polymères conducteurs(PC) a attiré une attention considérable en raison de leur bonne stabilité, de leur haute conductivité et de la facilité de leur dépôt sur le semi-conducteur mésoporeux TiO2. Dans ce travail de thèse, plusieurs s-DSSCs basées sur des PC utilisés comme HTM ont été développés dans le but d'améliorer leurs performances photovoltaïques en tenant compte des deux objectifs suivants: (i) l'optimisation des processus de transfert inter facial de charge dans la cellule solaire, et (ii) l'optimisation du transport de charge dans le semi-conducteur d'oxyde de type n. Pour atteindre ces objectifs, chaque composant de la s-DSSC a été modifié afin d'étudier son effet sur les performances du dispositif final. En première tentative, une étude analytique est réalisée en faisant varier le sensibilisateur afin de déterminer les fragments de la structure du colorant, qui ont un effet important sur le processus de photopolymérization électrochimique in-situ (PEP) à la fois en milieu organique et en milieu aqueux mais aussi sur les performances des s-DSSCs. Sur la base de ces résultats, un nouveau concept a été développé et consiste en la suppression totale de l'interface entre le colorant et le HTM. Ceci est obtenu par la synthèse de nouveaux colorants liés de façon covalente à un monomère électroactif qui est co-polymérisé par la PEP in-situ. Le copolymère résultant, utilisé comme HTM, est lié de manière covalente au colorant. En outre, la nature de la liaison chimique, reliant le résidu triphénylamine TPA au monomère, est également étudiée comme un facteur clé dans les performances de s-DSSC. En outre, et pour optimiser les processus de transport de charges dans ce type de s-DSSC, de nouvelles s-DSSC basées sur ZnO ont été réalisées et étudiées
Due to instability problems of dye sensitized solar cells (DSSCs) in longtime uses, the iodine based liquidelectrolyte has been replaced by several types of solid hole transporting materials (HTM) to perform solidstate DSSCs (s-DSSCs). Among them, the substitution by conducting polymers (CP) has attractedconsiderable attention because of their good stability, high hole-conductivity and simple deposition withinthe mesoporous TiO2 semiconductor. In this thesis work, several s-DSSCs based on CPs used as HTM havebeen developed in order to improve their photovoltaic performances taking into account the following twoobjectives: (i) the optimization of the interfacial charge transfer processes within the solar cell, and (ii) theoptimization of the charge transport within the n-type oxide semiconductor. To reach these goals, eachcomponent that constitutes the device was varied in order to investigate its effect on the device’sperformances. As first attempt, an analytical study is carried out by varying the sensitizer in order todetermine the fragments of the dyes structures, that have an important effect on the in-situ photoelectrochemical polymerization process (PEP) both in organic and in aqueous media and hence on theperformances of the s-DSSCs. Based on these results, a new concept of removing completely the interfacebetween the dye and the HTM is developed. This is achieved by the synthesis of new dyes covalently linkedto an electroactive monomer which is co-polymerized by in-situ PEP. The resulting co-polymer, used asHTM, is covalently linked to the dye. In addition, the nature of the chemical bond linking the triphenylamineresidue TPA to the monomer is also investigated as a key factor in the s-DSSCs performances. Besides, andto optimize the charge transport processes within this type of s-DSSC, the elaboration of novel ZnO baseds-DSSCs has been achieved and investigated
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Delices, Annette. "Organized Organic Dye / Hole Transporting Materials for TiO2- and ZnO- based Solid-State Dye-Sensitized Solar Cells (s-DSSCs)". Electronic Thesis or Diss., Sorbonne Paris Cité, 2017. https://theses.md.univ-paris-diderot.fr/DELICES_Annette_2_va_20170929.pdf.

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En raison des problèmes d'instabilité à moyen termes des cellules solaires à colorant (DSSC), l'électrolyte liquide à base d'iodure a été remplacé par plusieurs types de matériaux solides transport de trous (HTM) pour obtenir des DSSCs à l'état solide (s-DSSCs). Parmi ces matériaux, l’utilisation des polymères conducteurs(PC) a attiré une attention considérable en raison de leur bonne stabilité, de leur haute conductivité et de la facilité de leur dépôt sur le semi-conducteur mésoporeux TiO2. Dans ce travail de thèse, plusieurs s-DSSCs basées sur des PC utilisés comme HTM ont été développés dans le but d'améliorer leurs performances photovoltaïques en tenant compte des deux objectifs suivants: (i) l'optimisation des processus de transfert inter facial de charge dans la cellule solaire, et (ii) l'optimisation du transport de charge dans le semi-conducteur d'oxyde de type n. Pour atteindre ces objectifs, chaque composant de la s-DSSC a été modifié afin d'étudier son effet sur les performances du dispositif final. En première tentative, une étude analytique est réalisée en faisant varier le sensibilisateur afin de déterminer les fragments de la structure du colorant, qui ont un effet important sur le processus de photopolymérization électrochimique in-situ (PEP) à la fois en milieu organique et en milieu aqueux mais aussi sur les performances des s-DSSCs. Sur la base de ces résultats, un nouveau concept a été développé et consiste en la suppression totale de l'interface entre le colorant et le HTM. Ceci est obtenu par la synthèse de nouveaux colorants liés de façon covalente à un monomère électroactif qui est co-polymérisé par la PEP in-situ. Le copolymère résultant, utilisé comme HTM, est lié de manière covalente au colorant. En outre, la nature de la liaison chimique, reliant le résidu triphénylamine TPA au monomère, est également étudiée comme un facteur clé dans les performances de s-DSSC. En outre, et pour optimiser les processus de transport de charges dans ce type de s-DSSC, de nouvelles s-DSSC basées sur ZnO ont été réalisées et étudiées
Due to instability problems of dye sensitized solar cells (DSSCs) in longtime uses, the iodine based liquidelectrolyte has been replaced by several types of solid hole transporting materials (HTM) to perform solidstate DSSCs (s-DSSCs). Among them, the substitution by conducting polymers (CP) has attractedconsiderable attention because of their good stability, high hole-conductivity and simple deposition withinthe mesoporous TiO2 semiconductor. In this thesis work, several s-DSSCs based on CPs used as HTM havebeen developed in order to improve their photovoltaic performances taking into account the following twoobjectives: (i) the optimization of the interfacial charge transfer processes within the solar cell, and (ii) theoptimization of the charge transport within the n-type oxide semiconductor. To reach these goals, eachcomponent that constitutes the device was varied in order to investigate its effect on the device’sperformances. As first attempt, an analytical study is carried out by varying the sensitizer in order todetermine the fragments of the dyes structures, that have an important effect on the in-situ photoelectrochemical polymerization process (PEP) both in organic and in aqueous media and hence on theperformances of the s-DSSCs. Based on these results, a new concept of removing completely the interfacebetween the dye and the HTM is developed. This is achieved by the synthesis of new dyes covalently linkedto an electroactive monomer which is co-polymerized by in-situ PEP. The resulting co-polymer, used asHTM, is covalently linked to the dye. In addition, the nature of the chemical bond linking the triphenylamineresidue TPA to the monomer is also investigated as a key factor in the s-DSSCs performances. Besides, andto optimize the charge transport processes within this type of s-DSSC, the elaboration of novel ZnO baseds-DSSCs has been achieved and investigated
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5

Rodríguez, Seco Cristina. "Low-Molecular Weight Semiconductors for Organic and Perovskite Solar Cells". Doctoral thesis, Universitat Rovira i Virgili, 2019. http://hdl.handle.net/10803/667660.

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Actualment, les fonts d'energia renovables estan atraient molta atenció degut a l'impacte negatiu que els combustibles fòssils estan causant al planeta. Les tecnologies basades en les cel·les fotovoltaiques són una alternativa sostenible per cobrir la demanda energètica mundial. El principal objectiu d'aquest treball és el disseny i la síntesis de noves molècules per tal de reemplaçar els polímers habitualment utilitzats com a molècules captadores de llum en cel·les solars orgàniques i el spiro-OMeTAD usat com a transportador de buits (HTM per les sigles en anglès "hole transporting material") en dispositius solars de perovskita. D'una banda, els polímers són coneguts per ser bons transportadors de buits, posseir una elevada solubilitat i una bona habilitat per a la formació de capes, però entre els diferents lots existeix una baixa reproductibilitat degut a la seva síntesi complexa. D'altra banda, el spiro-OMeTAD és la molècula que millor reproductibilitat i eficiència presenta en cel·les solars de perovskita. No obstant això, la seva síntesi complexa i d’alt cost impedeix la possibilitat d'escalat a nivell industrial. Per tal de solucionar aquests problemes, aquesta tesi s'ha enfocat en el disseny, síntesi i caracterització d'un conjunt de molècules petites de baix pes molecular per a la seva aplicació en aquests dispositius.
Actualmente, las fuentes de energía renovables están atrayendo mucha atención debido al impacto negativo que los combustibles fósiles están causando al planeta. Las tecnologías basadas en las celdas fotovoltaicas son una alternativa sostenible para cubrir la demanda energética mundial. El principal objetivo de este trabajo fue el diseño y la síntesis de nuevas moléculas que reemplacen los polímeros comúnmente utilizados como moléculas captadoras de luz en celdas solares orgánicas y el spiro-OMeTAD usado como transportador de huecos (HTM por sus siglas en inglés “hole transporting material”) en dispositivos solares de perovskita. Por una parte, los polímeros son conocidos por ser buenos transportadores de huecos, su alta solubilidad y su favorable habilidad en la formación de capas, pero tienen muy poca reproducibilidad entre distintos lotes. Por otra parte, el spiro-OMeTAD es la molécula que mejor reproducibilidad y eficiencia presenta en celdas solares de perovskita. Sin embargo, su síntesis compleja y de alto coste impide la posibilidad de escalado a nivel industrial. Con el fin de solucionar estos problemas, esta tesis se ha enfocado en el diseño, síntesis y caracterización de un conjunto de moléculas pequeñas de bajo peso molecular para su aplicación en dichos dispositivos
Nowadays, renewable energy sources are attracting a lot of attention due to the undesired environmental impact the fossil fuels are causing to the Earth. Solar cells technologies are a sustainable alternative to the increasing world energy demand. The main aim of this work was to design and synthetize novel molecules that could replace the polymers widely used as absorbers in organic solar cells and spiro-OMeTAD used as a hole transporting material (HTM) in perovskite solar cells. On the one hand, polymers are known for their good hole transporting properties, high solubility and good film forming abilities but they have a poor batch-to-batch reproducibility. Furthermore, spiro-OMeTAD is the best molecule to achieve reproducible and highly efficient perovskite solar cells. However, its complex and expensive synthesis and purification hinder its usage in industrial scale photovoltaics. In order to overcome these problems, the rational design, synthesis and characterization of a variety of small molecules for both applications have been on a focus of this thesis.
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Paterson, Michael A. J. "A spectroelectrochemical investigation of arylamine based hole transporting materials". Thesis, Durham University, 2003. http://etheses.dur.ac.uk/3704/.

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This thesis describes exploratory synthetic, structural and electrochemical studies into the molecular and electronic structures of arylamine based hole transporting materials. The principle objectives in these studies were to increase understanding of the electronic structures of the materials involved and to investigate the effect of various substitution patterns on the chemical stability and electronic structure of these materials.
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Liu, Jiewei. "Investigating low cost hole transporting materials for perovskite solar cells". Thesis, University of Oxford, 2016. https://ora.ox.ac.uk/objects/uuid:51073048-faed-439d-9ce5-cbe4c55fe4b2.

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Organic-inorganic halide perovskites (CH3NH3PbI3) have attracted strong attention of photovoltaic research community since 2012, benefiting from the low cost of organolmetal halide perovskite precursors and their simple solution processability. However, the chemical instability of this material, especially in high humidity environment, restricts its photovoltaic application in industry. This thesis is focusing on employing novel hole transporting materials (HTMs) for perovskite solar cells (PSCs). Besides their main responsibility acting as a hole selective layer increasing the photovoltaic performance, HTMs can also play an additional role serving as moisture blocking layers, enhancing the stability of PSCs. Chapter 2 presents the general background knowledge of the physics of solar cells, delving deeper into the working principle of PSCs and related researches about the HTMs and stability of the devices. In chapter 3, the device fabrication techniques and the characterization methods used are presented in details. Commencing from chapter 4, the application of two kinds of HTMs and related studies are discussed. Chapter 4 demonstrates the use of a p-type organic material, PEDOT, on 'regular' structured PSCs, achieving devices with decent power conversion efficiency (PCE) but relatively huge hysteresis and low stabilized power output (SPO). Stability analysis shows this organic material provides a better protection of the perovskite film comparing to that of doped Spiro-OMeTAD, which is the most generally used HTM. Chapter 5 presents a study about CuSCN, an inorganic p-type semiconductor, being applied in PSCs as HTM. The CuSCN based devices show comparable performance to that of Spiro-OMeTAD based devices, but an interfacial degradation mechanism is found to facilitate the perovskite degradation even in inert atmosphere. A facile sealing protocol is established to deal with this problem, leading to super stable photovoltaic devices under thermal stressing. The following chapter 6 demonstrates a CuI doping technique to improve the hole transporting effectiveness of CuSCN layer. This doping technique modifies the morphology of CuSCN film and leads to a substantial improvement in the photovoltaic performance.
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Alexiou, I. "Hole transport materials for organic thin films". Thesis, University of Cambridge, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.595437.

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The aim of this project is to prepare and characterise novel triarylamine-based hole transport materials for xerographic applications that exhibit favourable electrochemical properties and amorphous nature. As an introduction, the six steps of the xerographic process and the common classes of hole transporting materials are described. The basic theories that have been developed for charge transport are discussed and an overview of the palladium-mediated amination and Suzuki reactions is given. In the following chapters, the synthesis and characterisation of a number of hole transporting triarylamines is reported. A series of linear trimeric arylamines is synthesised using the palladium-catalysed Suzuki protocol and their properties were determined using cyclic voltammetry, thermal gravimetric analysis and differential scanning calorimetry. Similar characterisation is carried out for a number of relatively unsubstituted phenyl and thiophene-based triarylamines. The synthesis of a series of oligomeric materials based on MPPD (Bis-methoxyphenyl-diphenyl-biphenyl-diamine) is reported and their electrochemical and thermal properties are investigated. Thiophene and dioctyl-fluorene-substituted MPPD-derivatives are studied as hole transport materials. Star-shaped and dendritic triarylamines with biphenyl and bithiophene-core molecules are also prepared using palladium-mediated chemistry and characterised. Finally, the attempts to synthesise macrocyclic triarylamine hole transporting materials are described in detail. The charge carrier properties for some of the synthesised materials are measured using the time-of-flight technique of using field-effect-transistors. Each set-up is described in detail and the hole mobility of the materials is calculated. A correlation between structural characteristics and charge-transporting properties is attempted.
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Park, Taiho. "Organic hole transport materials for dye-sensitised photocells". Thesis, University of Cambridge, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.619558.

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Barceló, Gisbert Irene. "Study of different electron and hole transporting materials for quantum dot-sensitized solar cells". Doctoral thesis, Universidad de Alicante, 2015. http://hdl.handle.net/10045/50105.

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El Sol proporciona a la Tierra una enorme cantidad de energía limpia. Sin embargo, para que la energía solar represente una parte importante del sistema energético mundial, se necesitan dispositivos fotovoltaicos más económicos y eficientes que los que se utilizan actualmente. Recientemente ha aparecido un nuevo diseño de célula solar, la célula solar sensibilizada de puntos cuánticos (cuyas siglas en inglés son QDSSCs), capaz de sobrepasar teóricamente el límite de Shockley-Queisser (al cual obedecen las células de primera y segunda generación). Sin embargo, el rendimiento de estos dispositivos es todavía bajo y su coste se ha visto algunas veces comprometido por el uso de ciertos materiales y procedimientos. Esta tesis trata de arrojar algo de luz sobre ciertos aspectos fundamentales que gobiernan el funcionamiento de estos dispositivos: el mecanismo de crecimiento y el modo de anclaje del elemento absorbente de luz sobre el aceptor de electrones/huecos, el empleo de capas intermedias para prevenir los procesos de recombinación en las diferentes interfases, la dinámica de los portadores de carga en el sistema donador-aceptor, etc. Además, se han investigado materiales de bajo coste y conceptos de célula muy poco explorados. Todo con el último propósito de allanar el camino para la obtención de QDSSCs económicas, estables y competitivas.
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Livros sobre o assunto "Organic Hole transporting materials"

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Otterbach, Steffen Andreas. Organic Semiconductors Based on [2. 2]Paracyclophanes and Porphyrins As Hole Transport Materials in Perovskite Solar Cells. Logos Verlag Berlin, 2023.

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Capítulos de livros sobre o assunto "Organic Hole transporting materials"

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Fu, Kunwu, Anita Wing Yi Ho-Baillie, Hemant Kumar Mulmudi e Pham Thi Thu Trang. "Organic Hole-Transporting Materials". In Perovskite Solar Cells, 159–82. Includes bibliographical references and index.: Apple Academic Press, 2019. http://dx.doi.org/10.1201/9780429469749-10.

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Ito, Seigo. "Inorganic Hole-Transporting Materials for Perovskite Solar Cell". In Organic-Inorganic Halide Perovskite Photovoltaics, 343–66. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-35114-8_14.

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Fu, Kunwu, Anita Wing Yi Ho-Baillie, Hemant Kumar Mulmudi e Pham Thi Thu Trang. "Inorganic Hole-Transporting Materials". In Perovskite Solar Cells, 183–200. Includes bibliographical references and index.: Apple Academic Press, 2019. http://dx.doi.org/10.1201/9780429469749-11.

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Fukagawa, Hirohiko. "Low-Molecular-Weight Materials: Hole Injection Materials". In Handbook of Organic Light-Emitting Diodes, 1–10. Tokyo: Springer Japan, 2019. http://dx.doi.org/10.1007/978-4-431-55761-6_52-1.

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Sasabe, Hisahiro, e Junji Kido. "Low Molecular Weight Materials: Hole-Transport Materials". In Handbook of Organic Light-Emitting Diodes, 1–6. Tokyo: Springer Japan, 2019. http://dx.doi.org/10.1007/978-4-431-55761-6_8-1.

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Wu, Chao, Peter I. Djurovich e Mark E. Thompson. "Study of Energy Transfer and Triplet Exciton Diffusion in Hole-Transporting Host Materials". In Electrophosphorescent Materials and Devices, 707–31. New York: Jenny Stanford Publishing, 2023. http://dx.doi.org/10.1201/9781003088721-40.

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Kharlamov, B. M. "“Hole Burning Spectroscopy of Organic Glasses”". In Multiphoton and Light Driven Multielectron Processes in Organics: New Phenomena, Materials and Applications, 151–66. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-011-4056-0_12.

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Singh, Nidhi, Ramesh Chand Thakur, Ashish Kumar e Praveen Kumar Sharma. "Solution-Processed Advanced Materials as Hole Transporting Layer for Application in Optoelectronic Devices". In Advanced Nanomaterials for Solution-Processed Flexible Optoelectronic Devices, 52–73. Boca Raton: CRC Press, 2025. https://doi.org/10.1201/9781032960500-3.

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Adachi, Chihaya, Marc A. Baldo, Stephen R. Forrest e Mark E. Thompson. "High-Efficiency Organic Electrophosphorescent Devices with tris(2-Phenylpyridine)Iridium Doped into Electron-Transporting Materials". In Electrophosphorescent Materials and Devices, 81–90. New York: Jenny Stanford Publishing, 2023. http://dx.doi.org/10.1201/9781003088721-7.

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Cao, Liang, Xing-Yu Gao, Andrew T. S. Wee e Dong-Chen Qi. "Quantitative Femtosecond Charge Transfer Dynamics at Organic/Electrode Interfaces Studied by Core-Hole Clock Spectroscopy". In Synchrotron Radiation in Materials Science, 137–78. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2018. http://dx.doi.org/10.1002/9783527697106.ch5.

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Trabalhos de conferências sobre o assunto "Organic Hole transporting materials"

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Sastre-Santos, Ángela. "Arylamine Zinc and Copper Phthalocyanines as Outstanding Hole Transporting Materials in Perovskite Solar Cells". In International Conference on Hybrid and Organic Photovoltaics. València: FUNDACIO DE LA COMUNITAT VALENCIANA SCITO, 2024. http://dx.doi.org/10.29363/nanoge.hopv.2024.040.

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Lin, W. K., S. H. Su, Y. F. Lin, J. R. Wang, J. L. Huang e M. Yokoyama. "Highly Efficient Organic Solar Cell Employing a Solution Processed Hole Transporting Layer". In 2011 International Conference on Solid State Devices and Materials. The Japan Society of Applied Physics, 2011. http://dx.doi.org/10.7567/ssdm.2011.bl-2-3.

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Jiewei Liu, Sandeep Pathak, Tomas Leijtens, Thomas Stergiopoulos, Konrad Wojciechowski, Stefan Schumann, Nina Kausch-Busies e Henry J. Snaith. "Novel low cost hole transporting materials for efficient organic-inorganic perovskite solar cells". In 2015 IEEE 42nd Photovoltaic Specialists Conference (PVSC). IEEE, 2015. http://dx.doi.org/10.1109/pvsc.2015.7355728.

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Luizys, Povilas, Jianxing Xia, Maryte Daskeviciene, Vygintas Jankauskas, Kasparas Rakstys, Vytautas Getautis e Mohammad Khaja Nazeeruddin. "Flexible Hole-Transporting Materials With N-Carbazolyl-Based Chromophores Linked Via Aliphatic Chain For Perovskite Solar Cells". In International Conference on Hybrid and Organic Photovoltaics. València: FUNDACIO DE LA COMUNITAT VALENCIANA SCITO, 2024. http://dx.doi.org/10.29363/nanoge.hopv.2024.142.

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Park, Sangshin, Hyukmin Kwon, Seokwoo Kang, Sunwoo Park e Jongwook Park. "Stable all‐inorganic perovskite quantum dots using a ZnX2‐trioctylphosphine‐oxide and a new hole transporting polymer in PeLEDs". In Organic and Hybrid Light Emitting Materials and Devices XXV, editado por Tae-Woo Lee, Franky So e Chihaya Adachi. SPIE, 2021. http://dx.doi.org/10.1117/12.2593786.

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Bacher, Andreas, Christian H. Erdelen, Dietrich Haarer, Wolfgang Paulus e Hans-Werner Schmidt. "Triphenylenes: a new class of hole transporting material in organic light-emitting diodes". In Optical Science, Engineering and Instrumentation '97, editado por Zakya H. Kafafi. SPIE, 1997. http://dx.doi.org/10.1117/12.279330.

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Okumoto, Kenji, Hidekaru Doi, Hiroshi Kageyama e Yasuhiko Shirota. "New hole-transporting amorphous molecular materials with high glass-transition temperatures for organic light-emitting diodes". In Photonic Devices + Applications, editado por Zakya H. Kafafi e Franky So. SPIE, 2007. http://dx.doi.org/10.1117/12.733806.

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BUI, Thanh-Tuân, Thi Huong Le, Fabrice Goubard, Thybault de Monfreid, Seul-Gi Kim e Nam-Gyu Park. "Triphenylamine/Thieno[3,4-c]pyrrole-4,6-dione based D–π-A–π-D Hole Transporting Materials for Perovskite Solar Cells". In 13th Conference on Hybrid and Organic Photovoltaics. València: Fundació Scito, 2021. http://dx.doi.org/10.29363/nanoge.hopv.2021.002.

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Wolf, Florian, Maximilian Sirtl, Sebastian Klenk, Maximilian Wurzenberger, Melina Armer, Patrick Dörflinger, Patrick Ganswindt, Roman Guntermann, Vladimir Dyakonov e Thomas Bein. "Behind the Scenes: Insights into the Structural Properties of Amide-Based Hole-Transporting Materials for Lead-Free Perovskite Solar Cells". In International Conference on Hybrid and Organic Photovoltaics 2023. València: FUNDACIO DE LA COMUNITAT VALENCIANA SCITO, 2023. http://dx.doi.org/10.29363/nanoge.hopv.2023.121.

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Inoue, K., A. Suzuki, T. Oku e T. Akiyama. "Fabrication and Evaluation of Organic Photoelectric Conversion Devices using Electrodeposited Polyaniline Films as a Hole Transporting Layer". In 2011 International Conference on Solid State Devices and Materials. The Japan Society of Applied Physics, 2011. http://dx.doi.org/10.7567/ssdm.2011.p-10-18.

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Relatórios de organizações sobre o assunto "Organic Hole transporting materials"

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Psaltis, Demetri. Large Scale Spectral Hole Burning Memory in Organic Materials. Fort Belvoir, VA: Defense Technical Information Center, abril de 2002. http://dx.doi.org/10.21236/ada408171.

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Brossia, Song e Sridhar. L52131 Gap Analysis of Location Techniques for CP Shielding. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), julho de 2004. http://dx.doi.org/10.55274/r0010438.

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To mitigate and prevent corrosion of pipelines, cathodic protection (CP) is imposed in the form of impressed current, sacrificial anodes (e.g., Mg ribbons), or a combination of the two. To reduce the CP current load and aid in corrosion prevention, most pipelines are also coated with an organic coating. Over the course of time, it has been noted that the coatings tend to degrade leading to disbondments, holidays, and tares. For the most part, the presence of holidays and tares are not of tremendous concern as the CP system is in place to protect them and if needed the current output of the system can be increased to compensate for the formation of new defects. Disbondments, however, can be a source of significant concern because in some case the CP does not penetrate and protect the disbonded region. This has been shown to be a leading factor in enhanced corrosion in the disbonded region as well as in the development of SCC failures in several pipeline systems. Such regions are difficult to protect with CP as they are shielded from the current (i.e., there is insufficient current flow for adequate protection), reflecting a condition known as CP shielding. CP shielding can occur for reasons other than coating disbondments, including permafrost, use of insulating panels to prevent contact of intersecting pipelines, various barrier materials, rocks, tree roots, and other naturally occurring high resistance materials, and often times casings. Even though not all cases of CP shielding are detrimental, it is evident that detecting and locating possible areas of CP shielding is of prime concern as these locations are potentially subject to higher corrosion rates and possible SCC. The objective of this project was to review and discuss current practices used to detect CP shielding as well as to conduct a gap analysis to explore other promising technologies that may prove useful if implemented. Because there are two main circumstances under which CP shielding is investigated, the discussion centers on detecting CP shielding from above ground and post hole excavations.
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