09:45 〜 10:00 ▲ [7a-C23-4] Effective mass and bandgap of ZnSnN2 earth-abundant solar absorber 〇(PC)Xiang Cao1、Fumio Kawamura2、Takashi Taniguchi2、Naoomi Yamada1 (1.Chubu Univ.、2.NIMS)