Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 130 for “"CdTe"”.
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Optical Characterization of CdTe, CdMgTe, and CdTe/CdMgTe Double Heterostructures
No abstract prepared.
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Processing of CdS/CdTe solar cell and the growth model of CdTe thin film
… silicon PV in the cost. The most common CdTe solar cells consist of a simple p-n heterojunction structure containing a p-doped CdTe layer and n-doped cadmium sulfide (CdS) layer, which acts as a window layer. Cadmium Sulfide (CdS) thin films are often deposited on glass substrates coated …
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Elektrische Charakterisierung von chlorgasaktivierten CdTe-Solarzellen
In der vorliegenden Arbeit wird eine Serie von CdTe-Solarzellen untersucht, die nach dem Aufbringen der CdTe-Schicht 0, 5, 10, 15, 27 und 45 min in einer Chlor/Stickstoff-Atmosphäre behandelt wurden. Nach 10 min Behandlungsdauer (Aktivierung) ist dabei ein starker Wirkungsgradanstieg zu …
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DFT calculations for cadmium telluride (CdTe)
Cadmium Telluride (CdTe) thin film photovoltaics (PV) has demonstrated low Levelized Cost of Energy (LCOE). CdTe technology also counted for half the thin film market in 2013 [3]. CdTe PV has the smallest carbon footprint a nd the energy payback time (less than one year) is the shortest of any …
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Studies of sputtered CdTe and CdSe solar cells
CdTe has recently become the most commercially successful polycrystalline thin filmsolar module material. Its low cost, large-area solar module is reshaping the silicondominatedsolar panel market; however, CdTe has much room to improve and thus morefundamental understanding is needed. Current thin …
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CdTe solar cells: growth phenomena and device performance
A systematic study is presented on the control of CdTe and CdS layers during their growth, with the understanding gained being implemented in the production of solar cells with enhanced performance. In particular the growth mechanisms for close space sublimation (CSS) — grown CdTe were evaluated as …
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CdTe Solar Cells: Key Layers and Electrical Effects
… the electrical properties of interfaces of the CdTe solar cell, and b) the photovoltaic (PV) performance. Annealing of the CdS/TCO (transparent conductive oxide) bilayer in both oxidising and reducing ambients was investigated in order to study changes in the electrical properties of the …
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Investigation into degradation of CdTe solar cells, An
Includes bibliographical references (pages 108-110).
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Electron-reflector strategy for CdTe thin-film solar cells
The CdTe thin-film solar cell has a large absorption coefficient and high theoretical efficiency. Moreover, large-area photovoltaic panels can be economically fabricated. These features potentially make the CdTe thin-film solar cell the leading alternative energy source. However, the record CdTe …
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Solution-processed doping in CdTe thin film solar cells
Cadmium Telluride (CdTe) is one of the leading photovoltaic (PV) technologies in the world with a world record ~ 22.1%. With a bandgap of 1.45eV and a high absorption coefficient, the theoretical power conversion efficiency limit of 32% is limited by recombination and high resistivities in CdTe …
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Optimization of the front end of CDTE solar cells
The front end of CdTe solar cells consists of two layers: a transparent conducting oxide (TCO) layer and a window layer. New wider band gap materials, ZnMgO are being used to replace CdS as the window layer for the purpose of removing blue loss. For ZnMgO, three important parameters, including the …
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Wandfreie CdTe-Einkristallzüchtung im halboffenen Gastransportsystem und deren Modellierung
… Grundlagen für die <br>wandfreie Züchtung von CdTe-Kristallen aus halboffenen Gasphasensystemen <br>nach MARKOV. <br> <br>Dazu wurde erstmals für die MARKOV-Anordnung ein laminar-diffusives <br>Transportmodell entwickelt. Es konnte damit gezeigt werden, wie das <br>Partialdruckverhältnis …
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Eletrossíntese e caracterização de Quantum Dots de CdTe e CdSe
… de síntese eletroquímica para síntese de QDs de CdTe e CdSe estabilizados pelo ácido tioglicólico (TGA). A metodologia de síntese eletroquímica desenvolvida consiste na redução eletroquímica de alguns calcogênios (telúrio e selênio) em solução aquosa de NaOH 0,2 mol L-1 (pH = 13) e atmosfera …
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Characterization of tellurium back contact layer for CdTe thin film devices
Cadmium Telluride (CdTe) thin film photovoltaic technology has shown favorable progress due to inexpensive and efficient processing techniques. However, efficiencies have yet to reach the overall projected CdTe device efficiency, with the back contact being a main source of CdTe performance …
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Research and development of CdS/CdTe solar cells incorporating ZnTe layers.
… are cadmium sulfide (CdS), cadmium telluride (CdTe) and zinc telluride (ZnTe).All of these layers were obtained by growing them using electrodeposition in aqueous solutions. In this project, electrodeposition using 2-electrode system was employed to deposit all of the semiconductors. The …
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Research and development of CdTe based thin film PV solar cells
… window materials, while the absorber material is CdTe. Fabricating a suitable devices for solar energy conversion (i.e. glass/conducting glass/window material/absorber material/metal) structure. Traditional way of fabricating this structure is to grow window material (CdS) using chemical bath …
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Negative Thermal Expansion in Zincblende Structure: an EXAFS study of CdTe
… EXAFS measurements have been performed on CdTe, which has NTE properties intermediate between Ge and CuCl. In this work an accurate evaluation of the bond thermal expansion, parallel and perpendicular MSRDs and distribution asymmetry of the first shell of CdTe has been made, obtaining a …
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