Impressive self-healing phenomenon of Cu2ZnSn(S, Se)4 solar cells<xref rid="cpb_27_6_066108_fn1" ref-type="fn">*</xref><fn id="cpb_27_6_066108_fn1"> <label>*</label> Project supported by the National Natural Science Foundation of China (Grant Nos. 91733301, 51761145042, 91433205, 11474333, 51421002, 51627803, and 51572288) and the International Partnership Program of the Chinese Academy of Sciences (Grant No. 112111KYSB20170089). </fn>

Impressive self-healing phenomenon of Cu₂ZnSn(S, Se)₄ solar cells* *

Project supported by the National Natural Science Foundation of China (Grant Nos. 91733301, 51761145042, 91433205, 11474333, 51421002, 51627803, and 51572288) and the International Partnership Program of the Chinese Academy of Sciences (Grant No. 112111KYSB20170089).

Yu Qing^{1, 2}, Shi Jiangjian¹, Zhang Pengpeng^{1, 2}, Guo Linbao^{1, 2}, Min Xue^{1, 2}, Luo Yanhong^{1, 2}, Wu Huijue¹, Li Dongmei^{1, 2, †}, Meng Qingbo^{1, 2, ‡}

(color online) (a) Photoelectric conversion efficiency evolution of baseline devices. (b) Device efficiency stability from initial fabrication to 110-days remeasurement. (c) Photoelectric conversion efficiency changes of baseline devices by seven-day storage in different conditions: rough vacuum, argon atmosphere and air. (d) Time-dependent light current–voltage (J–V) of the baseline SLG base sample and quartz base sample.