Flexible high-efficiency CZTSSe solar cells on stainless steel substrates

• DOI: 10.1039/c9ta08265d
• Publication Date: 2019-10-11T08:46:11Z
• Authors: Kwangseok Ahn; Se-Yun Kim; Sammi Kim; Dae-Ho Son; Seung-Hyun Kim; SeongYeon Kim; JunHo Kim; Shi-Joon Sung; Dae-Hwan Kim; Jin-Kyu Kang
• Keywords: KESTERITE CU2ZNSNS4; DIFFUSION-BARRIERS; LOW-COST; DEFECTS; 02 engineering and technology; FILMS; 530; 7. Clean energy; STATE; EARTH-ABUNDANT; ZNO; SIO2; 0210 nano-technology

Stainless steel (SS) foil is made of abundant materials and is a durable and flexible substrate, but the efficiency of a solar cell on SS foil deterioratesviathe diffusion of impurities from the SS substrate into a Cu2ZnSn(S,Se)4(CZTSSe) absorber layer.