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Title: Tetrahedrally coordinated disordered Cu 2SnS 3-Cu 2ZnSnS 4-ZnS alloys with tunable optical and electronic properties

Abstract

A key requirement for large-scale deployment of photovoltaic technologies is the development of highly functional materials with controllable opto-electronic properties. In this work, we report on the room-temperature synthesis of disordered alloys of the Earth-abundant, tetrahedrally coordinated semiconductors Cu 2SnS 3, Cu 2ZnSnS 4 (CZTS), and ZnS as (Cu 2SnS 3) 1-x(ZnS) x. The resulting disordered semiconductors are found to have continuously and independently tunable optical and electronic properties. Quasi-isovalent alloying on the cation sublattice allows the optical band gap to be varied continuously from 1.1 eV to 2.8 eV. Aliovalent alloying leads to independent control of carrier concentration over at least three orders of magnitude. A conceptual framework describing these disordered materials is presented, in which the structural disorder, constrained by local tetrahedral coordination of both anions and cations, leads to the observed high degree of tunability of the opto-electronic properties. These materials are not only independently interesting, but the developed framework also applies to the opto-electronic properties of kesterite CZTS materials as well as provides a basis for the development of new semiconductors.

Authors:
; ; ; ; ; ; ; ;  [1];  [2];  [2]
  1. NREL
  2. (
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
DOE - BASIC ENERGY SCIENCES
OSTI Identifier:
1151863
Resource Type:
Journal Article
Resource Relation:
Journal Name: Sol. Energ. Mat. Sol. C; Journal Volume: 129; Journal Issue: 10, 2014
Country of Publication:
United States
Language:
ENGLISH

Citation Formats

Erslev, Peter T., Young, Matthew R., Li, Jian V., Siah, Sin Cheng, Chakraborty, Rupak, Du, Hui, Lad, Robert J., Buonassisi, Tonio, Teeter, Glenn, MIT), and Maine). Tetrahedrally coordinated disordered Cu2SnS3-Cu2ZnSnS4-ZnS alloys with tunable optical and electronic properties. United States: N. p., 2014. Web. doi:10.1016/j.solmat.2014.05.024.
Erslev, Peter T., Young, Matthew R., Li, Jian V., Siah, Sin Cheng, Chakraborty, Rupak, Du, Hui, Lad, Robert J., Buonassisi, Tonio, Teeter, Glenn, MIT), & Maine). Tetrahedrally coordinated disordered Cu2SnS3-Cu2ZnSnS4-ZnS alloys with tunable optical and electronic properties. United States. doi:10.1016/j.solmat.2014.05.024.
Erslev, Peter T., Young, Matthew R., Li, Jian V., Siah, Sin Cheng, Chakraborty, Rupak, Du, Hui, Lad, Robert J., Buonassisi, Tonio, Teeter, Glenn, MIT), and Maine). Thu . "Tetrahedrally coordinated disordered Cu2SnS3-Cu2ZnSnS4-ZnS alloys with tunable optical and electronic properties". United States. doi:10.1016/j.solmat.2014.05.024.
@article{osti_1151863,
title = {Tetrahedrally coordinated disordered Cu2SnS3-Cu2ZnSnS4-ZnS alloys with tunable optical and electronic properties},
author = {Erslev, Peter T. and Young, Matthew R. and Li, Jian V. and Siah, Sin Cheng and Chakraborty, Rupak and Du, Hui and Lad, Robert J. and Buonassisi, Tonio and Teeter, Glenn and MIT) and Maine)},
abstractNote = {A key requirement for large-scale deployment of photovoltaic technologies is the development of highly functional materials with controllable opto-electronic properties. In this work, we report on the room-temperature synthesis of disordered alloys of the Earth-abundant, tetrahedrally coordinated semiconductors Cu2SnS3, Cu2ZnSnS4 (CZTS), and ZnS as (Cu2SnS3)1-x(ZnS)x. The resulting disordered semiconductors are found to have continuously and independently tunable optical and electronic properties. Quasi-isovalent alloying on the cation sublattice allows the optical band gap to be varied continuously from 1.1 eV to 2.8 eV. Aliovalent alloying leads to independent control of carrier concentration over at least three orders of magnitude. A conceptual framework describing these disordered materials is presented, in which the structural disorder, constrained by local tetrahedral coordination of both anions and cations, leads to the observed high degree of tunability of the opto-electronic properties. These materials are not only independently interesting, but the developed framework also applies to the opto-electronic properties of kesterite CZTS materials as well as provides a basis for the development of new semiconductors.},
doi = {10.1016/j.solmat.2014.05.024},
journal = {Sol. Energ. Mat. Sol. C},
number = 10, 2014,
volume = 129,
place = {United States},
year = {Thu Aug 28 00:00:00 EDT 2014},
month = {Thu Aug 28 00:00:00 EDT 2014}
}