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Abstract：
Cation substitution has an important impact on the power conversion efficiency (PCE) of Cu2ZnSn(S,Se)(4) (CZTSSe) solar cells. Herein, a significant PCE enhancement of flexible indium-doped CZTSSe solar cells has been achieved by partially substituting Sn4+ with In3+. Systematic measurements indicate that In doping in CZTSSe film effectively improves the crystallinity and carrier concentration of the absorber layer. Meanwhile, the treatment reduces interface recombination and band tailing by passivating deep defects and increases the open-circuit voltage (V-oc) of the solar cells. By physical analysis, the key parameters for the solar cell diode such as A, J(0), R-s and R-sh are significantly improved after In-doping, indicating better PN junction quality. Under the optimal In-doping (x = In/(Sn + In) = 9%), the flexible Cu2ZnSn1-xInx(S,Se)(4) solar cell has been successfully obtained with the best efficiency of 7.19% and the Voc enhancement of 62 mV due to reduced V-oc deficit and band tailing.
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SOLAR ENERGY MATERIALS AND SOLAR CELLS
ISSN： 0927-0248
Year： 2020
Volume： 209
7 . 2 6 7
JCR@2020
6 . 3 0 0
JCR@2023
ESI Discipline： MATERIALS SCIENCE;
ESI HC Threshold：196
JCR Journal Grade：1
CAS Journal Grade：2
Cited Count：
WoS CC Cited Count： 27
SCOPUS Cited Count： 27
ESI Highly Cited Papers on the List： 0 Unfold All
WanFang Cited Count：
Chinese Cited Count：
30 Days PV： 0
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