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Defect physics of the kesterite thin-film solar cell absorber Cu2ZnSnS4
Abstract
Cu 2 ZnSnS 4 is one of the most promising quaternary absorber materials for thin-film solar cells. Examination of the thermodynamic stability of this quaternary compound reveals that the stable chemical potential region for the formation of stoichiometric compound is small. Under these conditions, the dominant defect will be p-type CuZn antisite, which has an acceptor level deeper than the Cu vacancy. The dominant self-compensated defect pair in this quaternary compound is [CuZn−+ZnCu+]0, which leads to the formation of various polytype structures of Cu2ZnSnS4. We propose that to maximize the solar cell performance, growth of Cu2ZnSnS4 under Cu-poor/Zn-rich conditions will be optimal, if the precipitation of ZnS can be avoided by kinetic barriers.
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Cites
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set
Kresse, G., & Furthmüller, J. (1996) · Physical Review B · doi:10.1103/physrevb.54.11169 · Cited by 123,652
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Chen, S., Walsh, A., Yang, J.-H., Gong, X. G., Sun, L., Yang, P.-X., Chu, J.-H., & Wei, S.-H. (2011) · Physical Review B · doi:10.1103/physrevb.83.125201 · Cited by 473
Self-citationDefect Engineering in Multinary Earth‐Abundant Chalcogenide Photovoltaic Materials
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Metadata
- Authors
- Chen, S., Gong, X. G., Walsh, A., & Wei, S.-H.
- Venue
- Applied Physics Letters
- Publisher
- AIP Publishing
- Published
- 2010-01-11
- Volume
- 96
- Issue
- 2
- ISSN
- 0003-6951 (ISSN-L)
- 1077-3118
- OpenAlex
- W1631986788
- Cited by
- 570
- References
- 1
- FWCI
- 29.40
- Type
- journal article
- Language
- en
- Open access
- closed
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- Chen, S., Gong, X. G., Walsh, A., & Wei, S.-H. (2010). Defect physics of the kesterite thin-film solar cell absorber Cu2ZnSnS4. Applied Physics Letters. https://doi.org/10.1063/1.3275796
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