Towards an ab-initio characterization of novel intermediate band photovoltaic materials

Wahnón Benarroch, Perla and Palacios Clemente, Pablo and Aguilera Bonet, Irene and Sánchez Noriega, Kefrén (2008). Towards an ab-initio characterization of novel intermediate band photovoltaic materials. In: "2008 Conference on Optoelectronic and Microelectronic Materials and Devices", 28 jul - 1 aug 2008, Sidney, Australia. ISBN 978-1-4244-2716-1. https://doi.org/10.1109/COMMAD.2008.4802154.

Description

Title: Towards an ab-initio characterization of novel intermediate band photovoltaic materials
Author/s:
  • Wahnón Benarroch, Perla
  • Palacios Clemente, Pablo
  • Aguilera Bonet, Irene
  • Sánchez Noriega, Kefrén
Item Type: Presentation at Congress or Conference (Article)
Event Title: 2008 Conference on Optoelectronic and Microelectronic Materials and Devices
Event Dates: 28 jul - 1 aug 2008
Event Location: Sidney, Australia
Title of Book: 2008 Conference on Optoelectronic and Microelectronic Materials and Devices
Date: 2008
ISBN: 978-1-4244-2716-1
Subjects:
Freetext Keywords: Chalcopyrites, spinels, Solar cells, ab-initio
Faculty: Instituto de Energía Solar (IES) (UPM)
Department: Otro
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

An ab-initio study of novel photovoltaic materials with enhanced optoelectronic properties is presented in this contribution. Predictions of absorption coefficients agree completely with the characterization of the first experimental samples grown in the laboratory. Compounds selected for the study are derived from chalcogenide semiconductors in which several atoms are substituted by transition elements. These atoms modify the electronic band structure in such a way that a new narrow band appears inside the parent semiconductor band-gap. Partial occupation of this band enables that additional carriers could be obtained from absorption of photons with energy lower than that of the band-gap, thus enhancing the photovoltaic conversion properties of the material. It was estimated than a photovoltaic solar cell designed from this novel concept could reach a thermodynamic efficiency of 63.2% compared to 43.1% corresponding to the thermodynamic efficiency limit of conventional semiconductor based solar cells. Results show a significant enhancement of the absorption coefficient respecting to the corresponding parent semiconductor in the main emission region of the solar spectrum. For some of the theoretically proposed compounds, optoelectronic properties of recently synthesized samples have been obtained experimentally. Comparison of experimental absorption measurements with results of the calculations presented here shows a very good agreement.

Funding Projects

TypeCodeAcronymLeaderTitle
FP6SES6-CT-2003-502620FULLSPECTRUMUnspecifiedA new PV wave making more efficient use of the solar spectrum
Government of SpainMAT2006-10618CALIBANDUnspecifiedNuevos materiales fotovoltaicos de banda intermedia basados en calcogenuros
Madrid Regional GovernmentS-0505/ENE/0310NUMANCIAUnspecifiedNueva generación de materiales, dispositivos y estrategias fotovoltáicas para un mejor aprovechamiento de la energía solar

More information

Item ID: 62346
DC Identifier: http://oa.upm.es/62346/
OAI Identifier: oai:oa.upm.es:62346
DOI: 10.1109/COMMAD.2008.4802154
Official URL: https://ieeexplore.ieee.org/document/4802154
Deposited by: Biblioteca ETSI Telecomunicación
Deposited on: 24 Mar 2020 14:44
Last Modified: 24 Mar 2020 14:45
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