期刊
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
卷 12, 期 1, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssr.201700335
关键词
Cu2BaSnS4-xSex; Cu2ZnSnS4; kesterites; silver; tandem solar cells; thin films; triple junction solar cells
We propose a triple junction CBTSSe/CZTS/ACZTSe solar cell using earth abundant and non-toxic CBTSSe, CZTS, and ACZTSe as the primary absorbing layers for top, middle, and bottom cells, respectively. Using rigorous optoelectronic simulation, we analyze the performance of the proposed cell and vary absorber thicknesses in order to maximize its efficiency. The maximum obtainable efficiency is calculated to be 36.04% with 2.73V open circuit voltage, 17.88mAcm(-2) short circuit current density, and 73.7% fill factor including Shockley-Read-Hall, surface and radiative recombination mechanisms. The maximum achievable efficiency can be obtained from an optimized device structure with 250, 300, and 1000nm thicknesses of CBTSSe, CZTS, and ACZTSe, respectively. The design and analyses presented in this work would help in achieving highly efficient eco-friendly inorganic solar cells.
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