Publication Date:
2013-01-02
Description:
Cu2ZnSnS4 (CZTS) has attracted much attention recently as an absorber layer material in a heterojunction solar cell. Using the first-principles method, we calculate the band offsets for the CdS/CZTS heterojunction. The valence band offset is 1.2 eV for the (001) CdS/CZTS heterointerface and 1.0 eV for the (010) heterointerface, when CZTS is considered to crystallize in the kesterite structure. When CZTS is considered to crystallize in the stannite structure, eV for the (001) heterointerface and eV for the (010) heterointerface. In any case, the conduction band minimum of CZTS is higher than that of CdS, and the conduction band offset is in a range between 0.1 and 0.4 eV.
Print ISSN:
1110-662X
Electronic ISSN:
1687-529X
Topics:
Electrical Engineering, Measurement and Control Technology
,
Energy, Environment Protection, Nuclear Power Engineering
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