Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Photovoltaic application of the V, Cr and Mn-doped cadmium thioindate
Year:2014
Research Areas
  • Materials for electric engineering and electronics,
  • Solar cells
Information
Abstract
The CdIn2S4 spinel semiconductor is a potential photovoltaic material due to its energy band gap and absorption properties. These optoelectronic properties can be potentiality improved by the insertion of intermediate states into the energy bandgap. We explore this possibility using M = Cr, V and Mn as an impurity. We analyze with first-principles almost all substitutions of the host atoms by M at the octahedral and tetrahedral sites in the normal and inverse spinel structures. In almost all cases, the impurities introduce deeper bands into the host energy bandgap. Depending on the site substitution, these bands are full, empty or partially-full. It increases the number of possible inter-band transitions and the possible applications in optoelectronic devices. The contribution of the impurity states to these bands and the substitutional energies indicate that these impurities are energetically favorable for some sites in the host spinel. The absorption coefficients in the independent-particle approximation show that these deeper bands open additional photon absorption channels. It could therefore increase the solar-light absorption with respect to the host. (C) 2014 Elsevier B.V. All rights reserved.
International
Si
JCR
Si
Title
Journal of Alloys And Compounds
ISBN
0925-8388
Impact factor JCR
2,726
Impact info
Volume
591
10.1016/j.jallcom.2013.12.184
Journal number
From page
22
To page
28
Month
SIN MES
Ranking
Participants
  • Autor: Cesar Tablero Crespo (UPM)
Research Group, Departaments and Institutes related
  • Creador: Centro o Instituto I+D+i: Instituto de Energía Solar
  • Departamento: Electrónica Física
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)