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Chemical Engineering Journal

Chemical Engineering Journal

IF: 13.3
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Ag, Cd double gradient doping at front interface for high efficiency CZTSSe solar cells

Published:4 December 2024 DOI: 10.1016/j.cej.2024.158123
Xiu-Chun Guo, Xin-Pan Cui, Ke Sun, Xue-Ying Luo, Wen-Hui Zhou, Dong-Xing Kou, Si-Xin Wu

Abstract

Kesterite Cu2ZnSn(S,Se)4 (CZTSSe) solar cells have attracted considerable attention in recent years, and considered to be potential alternative solutions to existing commercialized solar cells for future energy demands. However, poor-quality p-n junction causes severe carrier recombination at the front interface, resulting high open-circuit voltage deficit and unsatisfactory efficiency of CZTSSe solar cells. In this work, Ag,Cd double gradient doping was introduced to front interface for interface carrier recombination suppression. Benefited from the formed Ag,Cd double gradient, defect and/or defect cluster at front interface significantly reduced, thus evidently suppressing the carrier recombination at front interface. As a result, the power conversion efficiency (PCE) of champion device increased from 10.04?% (Reference) to 12.66?% (With Ag,Cd). This Ag,Cd double gradient architecture offers new ideas for improvement of high efficiency CZTSSe as well as other solar cells.

Substances (7)

Materials
Procduct Name CAS Molecular Formula Supplier Price
Ethylene glycol 107-21-1 C2H6O2 1402 suppliers $10.00-$908.54
Diethylene glycol 111-46-6 C4H10O3 1177 suppliers $5.00-$6122.07
Ammonium hydroxide 1336-21-6 H5NO 750 suppliers $14.56-$1970.00
3-Mercaptopropionic acid 107-96-0 C3H6O2S 649 suppliers $6.00-$2055.90
Thiourea 62-56-6 CH4N2S 593 suppliers $18.00-$1095.00
Tin 7440-31-5 Sn 357 suppliers $15.00-$11390.00
Selenium 7782-49-2 Se 299 suppliers $27.00-$4361.66

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