主催: 公益社団法人 応用物理学会 多元系化合物・太陽電池研究会
会議名: 令和2年 応用物理学会 多元系化合物・太陽電池研究会 年末講演会 “International Workshop on Ternary and Multinary Compounds”
開催地: オンライン開催
開催日: 2020/12/12
p. 31-34
(Zn,Mg)O is applied to replace conventional ZnO as a second buffer layer of Cu2(Sn,Ge)S3 (CTGS) solar cells to optimize conduction band structure. Bandgap energy (Eg) of the (Zn,Mg)O films was changed from 3.20 to 3.65 eV by varying Mg/(Mg+Zn) from 0 to 0.257. The highest conversion efficiency of 4.5% was realized at the Eg of 3.55 eV owing to minimization of interfacial recombination.
