Comparison of chalcopyrite and kesterite thin-film solar cells
Journal of Industrial and Engineering Chemistry, 2017•Elsevier
In this study, we investigate methods of improving the efficiency of Cu 2 ZnSn (S, Se) 4
(CZTS)-based solar cells by comparing Cu (In, Ga) Se 2 (CIGSe)-and CZTS-based absorber
layers. In particular, the CZTS-based absorber exhibits lower current characteristics than the
CIGSe absorber layer in terms of the band gap alignment and electron-hole recombination
at the CdS-absorber interface. Moreover, we demonstrate that defects are one of the causes
of the voltage loss. In order to improve the efficiency of CZTS-based solar cells, it is …
(CZTS)-based solar cells by comparing Cu (In, Ga) Se 2 (CIGSe)-and CZTS-based absorber
layers. In particular, the CZTS-based absorber exhibits lower current characteristics than the
CIGSe absorber layer in terms of the band gap alignment and electron-hole recombination
at the CdS-absorber interface. Moreover, we demonstrate that defects are one of the causes
of the voltage loss. In order to improve the efficiency of CZTS-based solar cells, it is …
Abstract
In this study, we investigate methods of improving the efficiency of Cu2ZnSn(S,Se)4 (CZTS)-based solar cells by comparing Cu(In,Ga)Se2 (CIGSe)- and CZTS-based absorber layers. In particular, the CZTS-based absorber exhibits lower current characteristics than the CIGSe absorber layer in terms of the band gap alignment and electron-hole recombination at the CdS-absorber interface. Moreover, we demonstrate that defects are one of the causes of the voltage loss. In order to improve the efficiency of CZTS-based solar cells, it is important to control the band gap alignment at the CdS-absorber layer interface and to suppress the formation of secondary phases inside the absorber.
Elsevier
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