Atomistic consideration of earth-abundant chalcogenide materials for photovoltaics: Kesterite and beyond

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Despite the potential as a promising alternative to CdTe and Cu(In,Ga)Se-2, the kesterite compound Cu2ZnSn(S,Se)(4) (CZTSSe) presents a critical challenge mainly from its high open-circuit voltage (V-oc) deficit. Indeed, the V-oc of the record CZTSSe solar cell to date has accounted for only 61% of that calculated by the Shockley-Queisser limit, whose origin can be ascribed to nonradiative recombination from a high density of defects and secondary phases. Therefore, an atomistic understanding and characterization of CZTSSe is highly essential to overcoming the current shortcomings in kesterite. This review discusses the advanced characterization techniques for studying the intrinsic properties of kesterite at a nanometer scale. Moreover, a cation substitution with an ionic mismatch around constituents is recognized as an effective route to address the fundamental limit (i.e., the cationic disorder) in CZTSSe. Here, we review recent studies on a novel chalcogenide Cu2BaSn(S,Se)(4) that substitutes Zn with Ba and results in less cationic disordering.
Publisher
CAMBRIDGE UNIV PRESS
Issue Date
2018-12
Language
English
Article Type
Review
Citation

JOURNAL OF MATERIALS RESEARCH, v.33, no.23, pp.3986 - 3998

ISSN
0884-2914
DOI
10.1557/jmr.2018.350
URI
http://hdl.handle.net/10203/250132
Appears in Collection
EEW-Journal Papers(저널논문)MS-Journal Papers(저널논문)
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