Engineering of ambient processing conditions to control solvent induced intermediate phase in mixed halide organic-inorganic perovskite (CH3NH3PbI3-xClx) film for efficient planar perovskite solar cells. - Ashish Dubey; Eman A. Gamal; Nirmal Adhikari; Khan Mamun Reza; H. Zeyada; Qiquan Qiao (EIT, 2016)