1. A simple spiro-type hole transporting material for efficient perovskite solar cells1. Issue 7 (1st July 2015) Authors: Ganesan, Paramaguru; Fu, Kunwu; Gao, Peng; Raabe, Ines; Schenk, Kurt; Scopelliti, Rosario; Luo, Jingshan; Wong, Lydia H.; Grätzel, Michael; Nazeeruddin, Mohammad Khaja Journal: Energy & environmental science Issue: Volume 8:Issue 7(2015) Page Start: 1986 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗