Theoretical study on the kesterite solar cells based on Cu<sub>2</sub>ZnSn(S,Se)<sub>4</sub> and related photovoltaic semiconductors

Theoretical study on the kesterite solar cells based on Cu₂ZnSn(S,Se)₄ and related photovoltaic semiconductors

Ma Ji-Chao¹, Wei Gao-Feng^{1, †}, Liu Dan-Dan²

(color online) (a) The calculated band alignment of ZnS, CuGaS₂, and Cu₂ZnGeS₄. Adapted from Ref. [9]. (b) The calculated band alignment of binary CdS, ternary CuInSe₂ and CuGaSe₂, and quaternary Cu₂ZnSnS₄ and Cu₂ZnSnSe₄. The red dashed lines near the conduction band show the n-type doping limit. Adapted from Ref. [42].