Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
First principles calculations of complex intermediate band materials for photovoltaic devices
Year:2010
Research Areas
  • Physics - Semiconductors and band structure
Information
Abstract
An ab initio study of several compounds candidates to behave as intermediate band materials is presented. The use of these materials as the active element in solar cells is a promising way to enhance the photovoltaic efficiency. Indeed from this point of view, most interesting compounds are those whose host semiconductor presents a band-gap close to the optimum value of 2 eV. Chalcogenide compounds substituted by light transition metals are solid candidates to this end. While they are being further characterized and experimentally synthesized, another approach is being examined. It consists of using Si as host semiconductor. Ti implantation at concentrations several orders of magnitude above equilibrium solubility has shown a probable intermediate band material behavior, the origin of the intermediate band being related to levels of interstitial Ti. Optoelectronic Characterization of this material is completed. A novel possibility consists of combining chalcogen S implantation with boron. In this case preliminary results of electronic structure are shown.
International
Si
Congress
2009 MRS Fall Meeting: Material Research Society Symposium: R - Advanced Nanostructured Solar Cells
960
Place
Boston (MA), EEUU
Reviewers
Si
ISBN/ISSN
978-0-444-20500-1
Start Date
30/11/2010
End Date
04/12/2010
From page
1
To page
6
Mater. Res. Soc. Symp. Proc.
Participants
  • Autor: Perla Wahnon Benarroch (UPM)
  • Autor: Irene Aguilera Bonet (UPM)
  • Autor: Pablo Palacios Clemente (UPM)
  • Autor: Kefrén Sánchez Noriega (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)