9:30 AM - 11:30 AM [20a-PB2-20] Annealing temperature dependence of a mesoporous layer with highly crystalline fine TiO2 particles used for low temperature perovskite solar cells 〇Tsuyoshi Abe1, Masashi Ikegami1, Tsutomu Miyasaka1 (1.Toin Univ. of Yokohama)