The structural, electronic, and optical properties of organic–inorganic mixed halide perovskites CH3NH3Pb(I1−yXy)3 (X = Cl, Br)*

Project supported by the Financial Support from the “12th Five-Year” Science and Technology Research Project of the Education Department of Jilin Province (Grant No. [2016] 494) and the National Natural Science Foundation of China (Grant No. 21173035).

Jiang Miao1, Deng Naihang1, Wang Li1, Xie Haiming1, 2, Qiu Yongqing1, 2, †
       

Electronic band structures of CH3NH3Pb(I1−yBry)3 with spin–orbital coupling for (a) y = 0.33, (b) y = 0.67 and CH3NH3Pb(I1−yCly)3 for (c) y = 0.33, (d) y = 0.67. The dashed line indicates the calculated Fermi levels.