Issue 24, 2013
From the journal:

CrystEngComm

Formation of intermediate solid solutions in the quaternary exchange system Cu(In,Ga)(S,Se)2–2Cd(S,Se)

Yaroslav E. Romanyuk,*a   Larysa P. Marushko,b   Lyudmyla V. Piskach,b   Ivan V. Kityk,bc   Anatolii O. Fedorchuk,d   Vasyl I. Pekhnyoe  and  Oleg V. Parasyukb  

* Corresponding authors

a Laboratory for Thin Films and Photovoltaics, Empa – Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 Dübendorf, Switzerland
E-mail: yaroslav.romanyuk@empa.ch
Fax: +41 58 765 1122
Tel: +41 58 765 4169

b Department of General and Inorganic Chemistry, Eastern European National University, Voli Ave 13, Lutsk 43009, Ukraine

c Electrical Engineering Department, Czestochowa Technological University, Al. Armii Krajowej 17, Czestochowa, Poland

d Department of Inorganic and Organic Chemistry, Lviv National University of Veterinary Medicine and Biotechnologies, Pekarska Str.50, 79010 Lviv, Ukraine

e V. I. Vernadskii Institute of General and Inorganic Chemistry, National Academy of Sciences of Ukraine, 03680 Kyiv, Ukraine

Abstract

While record solar cells based on Cu(In,Ga)Se2 (CIGS) absorbers exhibit the highest conversion efficiencies among all thin film photovoltaic technologies, the structural nature of the electronically favourable heterojunction CIGS–CdS is still debatable. Here, we present an investigation of the phase equilibria in the full Cu(In,Ga)(S,Se)2–2Cd(S,Se) quaternary exchange system at the selected annealing temperature of 870 K in order to reveal the formation of intermediate solid solutions. There are three single phase regions in the system: the chalcopyrite α-solid solution based on Cu(In,Ga)(S,Se)2, the wurtzite β-solid solution of Cd(S,Se), and the intermediate γ-solid solution existing in a zinc blende structure. The γ-phase has a broad homogeneity range and crystallizes in the cubic space group F[4 with combining macron]3m with a statistical distribution of metal atoms in the cation sub-lattice.

Graphical abstract: Formation of intermediate solid solutions in the quaternary exchange system Cu(In,Ga)(S,Se)2–2Cd(S,Se)

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Article information

DOI
https://doi.org/10.1039/C3CE00043E
Article type
Paper
Submitted
09 Jan 2013
Accepted
16 Apr 2013
First published
16 Apr 2013

CrystEngComm, 2013,15, 4838-4843

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Formation of intermediate solid solutions in the quaternary exchange system Cu(In,Ga)(S,Se)2–2Cd(S,Se)

Y. E. Romanyuk, L. P. Marushko, L. V. Piskach, I. V. Kityk, A. O. Fedorchuk, V. I. Pekhnyo and O. V. Parasyuk, CrystEngComm, 2013, 15, 4838 DOI: 10.1039/C3CE00043E

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