11:45 AM - 12:00 PM ▲ [19a-E101-11] Photophysics of Perovskite Solar Cells based on Sn-TiO2 Electron Extraction Layer Revealed by Time-Resolved Photoluminescence Spectroscopy 〇Yinghan Liao1, Mingchung Wu1 (1.Chang Gung Univ.)