First-principles study on optic-electronic properties of doped formamidinium lead iodide perovskite
Diao Xin-Feng
1, 2
, Tang Yan-Lin
3, †
, Xie Quan
1
Optical absorption spectra of FA
x
Cs
1−
x
Sn
0.5
Pb
0.5
I
3
and FA
0.75
Cs
0.25
Sn
1−
y
Pb
y
I
3
.