Electronic and optical properties of substitutional V, Cr and Ir impurities in Cu2ZnSnS4

Tablero Crespo, César (2014). Electronic and optical properties of substitutional V, Cr and Ir impurities in Cu2ZnSnS4. "Solar Energy Materials and Solar Cells", v. 125 ; pp. 8-13. ISSN 0927-0248. https://doi.org/10.1016/j.solmat.2014.02.016.

Description

Title: Electronic and optical properties of substitutional V, Cr and Ir impurities in Cu2ZnSnS4
Author/s:
  • Tablero Crespo, César
Item Type: Article
Título de Revista/Publicación: Solar Energy Materials and Solar Cells
Date: June 2014
ISSN: 0927-0248
Volume: 125
Subjects:
Freetext Keywords: Electronic structure; Semiconductors; Photovoltaics; Intermediate band
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Electrónica Física
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

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.

Funding Projects

TypeCodeAcronymLeaderTitle
FP7EC/FP7/283798NGCPVUNIVERSIDAD POLITECNICA DE MADRIDA new generation of concentrator photovoltaic cells, modules and systems
Government of SpainENE2012-37804-C01UnspecifiedUnspecifiedUnspecified

More information

Item ID: 37384
DC Identifier: http://oa.upm.es/37384/
OAI Identifier: oai:oa.upm.es:37384
DOI: 10.1016/j.solmat.2014.02.016
Official URL: http://www.sciencedirect.com/science/article/pii/S092702481400097X
Deposited by: Memoria Investigacion
Deposited on: 05 Sep 2015 10:25
Last Modified: 01 Jul 2016 22:30
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