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Wahnón Benarroch, Perla and Palacios Clemente, Pablo and Aguilera Bonet, Irene and Conesa Cegarra, José Carlos and Lucena García, Raquel and Gamarra Sánchez, Daniel (2009). New complex intermediate band materials for highly efficient photovoltaic cells. In: "24th European Photovoltaic Solar Energy Conference", 21-25 Sept 2009, Hamburgo, Alemania. ISBN 3-936338-25-6. pp. 187-190.
Title: | New complex intermediate band materials for highly efficient photovoltaic cells |
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Author/s: |
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Item Type: | Presentation at Congress or Conference (Article) |
Event Title: | 24th European Photovoltaic Solar Energy Conference |
Event Dates: | 21-25 Sept 2009 |
Event Location: | Hamburgo, Alemania |
Title of Book: | Proceedings of the 24th European Photovoltaic Solar Energy Conference |
Date: | 2009 |
ISBN: | 3-936338-25-6 |
Subjects: | |
Freetext Keywords: | intermediate band, modelling, high efficiency, silicon clathrate, sulphide, transition element, thin film |
Faculty: | E.T.S.I. Telecomunicación (UPM) |
Department: | Otro |
Creative Commons Licenses: | Recognition - No derivative works - Non commercial |
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Several complex compounds that result from inserting atoms of certain transition metals in known semiconductors are proposed as intermediate band materials that, used as light absorbers, would allow to increase substantially photovoltaic efficiency. In particular, these are sulphides containing indium in octahedral coordination as the spinel CdIn2S4 or scandium (Sc2S3, with a defect NaCl structure) with the trivalent element partially substituted by Ti or V, and the silicon clathrate of type II (having a fcc Bravais lattice with 34 Si atoms per primitive cell) in which V substitutes partially Si or Ag is occluded in the intracrystalline cavities. DFT calculations show that in several of these structures the added metal gives rise to a partially occupied, relatively narrow band located between the conduction and valence bands. Some of these structures have been synthesized experimentally, and we show UV-Vis-NIR spectra agreeing with the DFT predictions.
Type | Code | Acronym | Leader | Title |
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Government of Spain | CSD2006-0004 | GENESIS-FV | Unspecified | Investigación en materia de una nueva generación de materiales, células y sistemas para la conversión fotovoltaica |
Madrid Regional Government | S-05050/ENE/0310 | NUMANCIA | Unspecified | Nueva generación de materiales, dispositivos y estrategias fotovoltaicas para un mejor aprovechamiento de la energía del sol |
Government of Spain | MAT2009-14625-CO3-01 | FOTOMAT | Unspecified | Diseño, síntesis y caracterización de materiales fotovoltaicos avanzados de alta eficiencia |
Item ID: | 62835 |
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DC Identifier: | https://oa.upm.es/62835/ |
OAI Identifier: | oai:oa.upm.es:62835 |
Deposited by: | Biblioteca ETSI Telecomunicación |
Deposited on: | 30 Jun 2020 10:10 |
Last Modified: | 30 Jun 2020 10:10 |