First-principles study on optic-electronic properties of doped formamidinium lead iodide perovskite
Diao Xin-Feng1, 2, Tang Yan-Lin3, †, Xie Quan1
       

Optical absorption spectra of FAxCs1−xSn0.5Pb0.5I3 and FA0.75Cs0.25Sn1−yPbyI3.