[16p-Z02-1~8] Expansion of solar energy application and applied physics led by multinary compounds

△ [16p-Z02-3] Effect of Se supply on Cu₂Zn (Sn_1-xGe_x) Se₄ solar cells

〇Maya Minamikawa¹, Hitoshi Tampo², Takehiko Nagai², Than Htay Myo¹, Hashimoto Yoshio¹ (1.Shinshu Univ., 2.AIST)

Keywords:solar cell

The effects of Se supply on Cu₂Zn(Sn_1-xGe _x)Se₄ (CZTGSe)solar cells were investigated. CZTGSe films were grown by thermal deposition using a co-evaporation method. We controlled Se supply temperature.The current-voltage measurements and external quantum efficiency (EQE)were conducted. In conclusion, when Se supply temperature increased, conversion efficiency and short-circuit current increased.