Memorias de investigación
Ponencias en congresos:
New materials for intermediate band photovoltaic cells. A theoretical and experimental approach
Año:2010
Áreas de investigación
  • Fisica sb -- semiconductores y estructura de bandas
Datos
Descripción
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.
Internacional
Si
Nombre congreso
25th European Photovoltaic Solar Energy Conference and Exhibition - 5th World Conference on Photovoltaic Energy Conversion
Tipo de participación
960
Lugar del congreso
Valencia (España)
Revisores
Si
ISBN o ISSN
3-936338-26-4
DOI
Fecha inicio congreso
06/09/2010
Fecha fin congreso
10/09/2010
Desde la página
203
Hasta la página
206
Título de las actas
Proc. 25th EU PVSEC/5th WCPEC
Esta actividad pertenece a memorias de investigación
Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Silicio y Nuevos Conceptos para Células Solares
  • Centro o Instituto I+D+i: Instituto de Energía Solar