Vibrational and optoelectronic properties for intermediate band materials based on substituted chalcopyrites

Palacios Clemente, Pablo and Wahnón Benarroch, Perla and Aguilera Bonet, Irene and Sánchez Noriega, Kefrén and Fernández, J.J. (2007). Vibrational and optoelectronic properties for intermediate band materials based on substituted chalcopyrites. In: "22nd European Photovoltaic Solar Energyc Conference", 3-7 Sept 2007, Milán, italia. ISBN 3936338221. pp. 377-380.

Description

Title: Vibrational and optoelectronic properties for intermediate band materials based on substituted chalcopyrites
Author/s:
  • Palacios Clemente, Pablo
  • Wahnón Benarroch, Perla
  • Aguilera Bonet, Irene
  • Sánchez Noriega, Kefrén
  • Fernández, J.J.
Item Type: Presentation at Congress or Conference (Article)
Event Title: 22nd European Photovoltaic Solar Energyc Conference
Event Dates: 3-7 Sept 2007
Event Location: Milán, italia
Title of Book: Proceedings of the 22nd European Photovoltaic Solar Energyc Conference
Date: 2007
ISBN: 3936338221
Subjects:
Freetext Keywords: Chalcopyrite; Intermediate band materials; Vibrational calculations; Optical properties
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Otro
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Novel materials for high efficiency photovoltaic solar cell have been study. Their vibrational and optical properties are the main objective of this work. The materials of interest are based on a chalcopyrite-type semiconductor (CuGaS2) with some Gallium atoms substituted by a transition metal atom. The insertion of the metal gives rise to the formation of an isolated band between the valence band and the conduction band of the host semiconductor. Here we present a frozen phonon ab-initio density functional theory calculations of the vibrational properties of the host chalcopyrite and the substituted alloys. This study can be used to calculate the phonon contribution to the free energy balance of formation and assess their thermodynamic viability. We have also carried out a study of the optoelectronic properties of these materials such as optical reflectivity and absorption coefficient. We demonstrate that the intermediate band increases the absorption of the material in the main region of the solar spectrum, as desired for photovoltaic applications.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainMAT2006-10618CALIBANDUnspecifiedNuevos materiales fotovoltaicos de banda intermedia basados en calcogenuro
Government of SpainCSD2006-04GENESIS-FVUnspecifiedInvestigación en materia de una nueva generación de materiales, células y sistemas para la conversión fotovoltaica
FP6SES-CT-2003-502620FULLSPECTRUMUnspecifiedA new PV wave making more efficient use of the solar spectrum

More information

Item ID: 62830
DC Identifier: http://oa.upm.es/62830/
OAI Identifier: oai:oa.upm.es:62830
Deposited by: Biblioteca ETSI Telecomunicación
Deposited on: 30 Jun 2020 10:14
Last Modified: 30 Jun 2020 10:14
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