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) Time-dependent XRD pattern of CZTSSe absorber film. (b) Normalized Raman spectra of CZTSSe absorber films. SIMS depth profile of (c) Na, Cu, Zn, Sn content throughout the film (d) Cd content of superficial area, the 0-d sample intensity multiplied by 2.4 times.