Interfaces of high-efficiency kesterite Cu<sub>2</sub>ZnSnS(e)<sub>4</sub> thin film solar cells

Interfaces of high-efficiency kesterite Cu₂ZnSnS(e)₄ thin film solar cells

Gao Shoushuai¹, Jiang Zhenwu¹, Wu Li², Ao Jianping^{1, †}, Zeng Yu¹, Sun Yun¹, Zhang Yi^{1, ‡}

(color online) Schematic diagrams of band alignments of the Zn(O,S)/CZTSe interface for (a) the untreated sample and (b) the etched&annealed sample. Reproduced with permission from Ref. [28].