Lead Iodide Perovskite Sensitized All-Solid-State Submicron Thin Film Mesoscopic Solar Cell with Efficiency Exceeding 9% Hui-Seon Kim1, Chang-Ryul Lee1, Jeong-Hyeok Im1, Ki-Beom Lee1, Thomas Moehl2, Arianna Marchioro2, Soo-Jin Moon2, Robin Humphry-Baker2, Jun-Ho Yum2, Jacques E. Moser2, Michael Gr ...