12:00 〜 12:15 ▼ [19a-E315-11] Alkali-induced Grain Boundary Reconstruction on CIGS Thin Film Solar Cells using Heavy Alkali-post Deposition Treatment 〇(P)TzuYing LIN1、Ishwor Khatri1、Mutsumi Sugiyama1、Tokio Nakada1 (1.Tokyo Univ. Science)