Memorias de investigación
Artículos en revistas:
Electronic and optical properties of substitutional V, Cr and Ir impurities in Cu2ZnSnS4
Año:2014
Áreas de investigación
  • Células solares
Datos
Descripción
The substitution of cation atoms by V, Cr and It in the natural and synthetic quaternary Cu2ZnSnS4 semiconductor is analyzed using first-principles methods. In most of the substitutions, the electronic structure of these modified CZTS is characterized for intermediate bands with different occupation and position within of the energy band gap. A study of the symmetry and composition of these intermediate bands is carried out for all substitutions. These bands permit additional photon absorption and emission channels depending on their occupation. The optical properties are obtained and analyzed. The absorption coefficients are split into contributions from the different absorption channels and from the inter- and intra-atomic components. The sub bandgap transitions are significant in many cases because the anion states contribute to the valence, conduction and intermediates bands. These properties could therefore be used for novel optoelectronic devices. (C) 2014 Elsevier B.V. All rights reserved.
Internacional
Si
JCR del ISI
Si
Título de la revista
Solar Energy Materials And Solar Cells
ISSN
0927-0248
Factor de impacto JCR
5,03
Información de impacto
Volumen
125
DOI
Número de revista
Desde la página
8
Hasta la página
13
Mes
SIN MES
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Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Silicio y Nuevos Conceptos para Células Solares
  • Departamento: Electrónica Física
  • Centro o Instituto I+D+i: Instituto de Energía Solar