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Electronic and optical structure of wurtzite CuInS2

Tomic, S, Bernasconi, L, Searle, BG and Harrison, NM 2014, 'Electronic and optical structure of wurtzite CuInS2' , The Journal of Physical Chemistry C, 118 (26) , pp. 14478-14484.

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Abstract

We present a theoretical study of the electronic structure of the wurtzite CuInS2 material. To address reliably some material properties of this new phase we use hybrid density functional theory. Among possible wurtzite polymorphs, we have determined the most stable phase on the basis of total energy minimization. The minimum energy structure exhibits a semiconducting ground state with a band gap of ∼1.3 eV in excellent agreement with experimental data. We use time-dependent density functional theory to compare the optical response of the chalcopyrite and wurtzite phases and to identify the nature of the optically active transitions in the vicinity of the absorption edge. Our analysis indicates that the wurtzite CuInS2 structure is a suitable material for photovoltaic applications.

Item Type: Article
Schools: Schools > School of Computing, Science and Engineering
Journal or Publication Title: The Journal of Physical Chemistry C
Publisher: ACS Publication
ISSN: 1932-7447
Related URLs:
Funders: Engineering and Physical Sciences Research Council (EPSRC), Royal Society, London, Great Britain Sasakawa Foundation
Depositing User: Prof Stanko Tomic
Date Deposited: 08 Dec 2015 15:54
Last Modified: 18 Mar 2016 11:50
URI: http://usir.salford.ac.uk/id/eprint/37362

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