Fig. 9From: Enhanced performance of CH3NH3PbI3−x Cl x perovskite solar cells by CH3NH3I modification of TiO2-perovskite layer interface(Color online) Photoluminescence spectra of CH3NH3PbI3−x Cl x film deposited on meso-TiO2 films modified by CH3NH3I solution with different concentrationsBack to article page