Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
New materials for intermediate band photovoltaic cells. A theoretical and experimental approach
Year:2010
Research Areas
  • Physics - Semiconductors and band structure
Information
Abstract
Density functional theory calculations of certain transition-metal doped semiconductors show a partially occupied relatively narrow band located between valence band and conduction band. These novel systems, containing the metallic band, are called intermediate-band materials. They have enhanced optoelectronic properties which allow an increase in solar energy conversion efficiency of conventional solar cells. We previously proposed III-V, chalcopyrite and sulfide derived compounds showing desirable characteristics to produce the intermediate band of interest inside the band-gap. In order to obtain further intermediate-band material proposals, this work focuses on studing other compounds constituted mainly by tetravalent elements. The first proposal is vanadium substituting Sn atoms in SnS2, the second one is composed by type II silicon clathrate with two possibilities: vanadium substituting Si and Ag occluded in the intra-crystalline cavities. UV-Vis-NIR spectra of some of these systems experimentally synthesized show an agreement with previous theoretical predictions.
International
Si
Congress
25th European Photovoltaic Solar Energy Conference and Exhibition - 5th World Conference on Photovoltaic Energy Conversion
960
Place
Valencia (España)
Reviewers
Si
ISBN/ISSN
3-936338-26-4
Start Date
06/09/2010
End Date
10/09/2010
From page
203
To page
206
Proc. 25th EU PVSEC/5th WCPEC
Participants
  • Autor: Perla Wahnon Benarroch (UPM)
  • Autor: J.C. CONESA
  • Autor: Pablo Palacios Clemente (UPM)
  • Autor: R. LUCENA
  • Autor: Irene Aguilera Bonet (UPM)
  • Autor: Yohanna Seminóvski Pérez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Silicio y Nuevos Conceptos para Células Solares
  • Centro o Instituto I+D+i: Instituto de Energía Solar
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)