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Title: Distant-Atom Mutation for Better Earth-Abundant Light Absorbers: A Case Study of Cu2BaSnSe4

Journal Article · · ACS Energy Letters
 [1];  [1];  [2]; ORCiD logo [1]
  1. Univ. of Toledo, OH (United States). Wright Center for Photovoltaics Innovation and Commercialization (PVIC) and Dept. of Physics
  2. Texas State Univ., San Marcos, TX (United States). Dept. of Physics and Materials Sciences Engineering and Commercialization

Thin-film Cu(In,Ga)Se2 and CdTe solar cells have demonstrated high power conversion efficiencies, but they cannot provide a sustainable clean energy pathway because of the scarcity of Te and In. In this paper, we propose a distant-atom concept to mutate In by a group II element (Ba) and a group IV element (Sn) that are at rather different locations on the periodic table. Because of the very different electronic properties between the cations, the resultant earth-abundant orthorhombic Cu2BaSnSe4 absorber does not have the detrimental cation–cation disorder issue seen in the earth-abundant kesterite Cu2ZnSnSe4 absorber. We anticipate that Cu2BaSnSe4 solar cells should not have large open-circuit voltage deficits as seen in CuZnSnSe4 solar cells. Density functional theory calculation of the electronic and defect properties of Cu2BaSnSe4 confirms these expectations.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Sustainable Transportation Office. Hydrogen Fuel Cell Technologies Office; USDOE Office of Science (SC); National Science Foundation (NSF)
Grant/Contract Number:
AC02-05CH11231; CHE-1230246; DMR- 1534686
OSTI ID:
1485482
Journal Information:
ACS Energy Letters, Vol. 2, Issue 1; ISSN 2380-8195
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 62 works
Citation information provided by
Web of Science

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  • Mendis, Budhika G.; Shannon, Mervyn D.; Goodman, Max CJ
  • Progress in Photovoltaics: Research and Applications, Vol. 22, Issue 1 https://doi.org/10.1002/pip.2279
journal September 2012
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Cited By (12)

Solution phase fabrication of photoactive Cu2BaSnS4 thin films for solar energy harvesting journal November 2019
Modelling of novel-structured copper barium tin sulphide thin film solar cells journal July 2019
Doping and alloying of kesterites journal August 2019
Progress in Theoretical Study of Metal Halide Perovskite Solar Cell Materials journal August 2017
New Earth-Abundant Thin Film Solar Cells Based on Chalcogenides journal April 2019
Efficiency enhancement of Cu2BaSnS4 experimental thin-film solar cell by device modeling journal August 2019
Cation Substitution in Earth-Abundant Kesterite Photovoltaic Materials journal January 2018
Effect of Fe content on Cu 2 Fe x Zn 1− x SnS 4 single crystals fabricated by flux growth method journal June 2018
Recent Advances in Earth‐Abundant Photocathodes for Photoelectrochemical Water Splitting journal August 2018
Chemical Origin of the Stability Difference between Copper(I)- and Silver(I)-Based Halide Double Perovskites journal August 2017
Strategies for enhancing the photocurrent, photovoltage, and stability of photoelectrodes for photoelectrochemical water splitting journal January 2019
Strategies for enhancing the photocurrent, photovoltage, and stability of photoelectrodes for photoelectrochemical water splitting text January 2019

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