Highly efficient bifacial semitransparent perovskite solar cells based on molecular doping of CuSCN hole transport layer
Hou Shixin1, 2, 3, 4, 5, Shi Biao1, 2, 3, 4, 5, Wang Pengyang1, 2, 3, 4, 5, †, Li Yucheng1, 2, 3, 4, 5, Zhang Jie1, 2, 3, 4, 5, Chen Peirun1, 2, 3, 4, 5, Chen Bingbing1, 2, 3, 4, 5, Hou Fuhua1, 2, 3, 4, 5, Huang Qian1, 2, 3, 4, 5, Ding Yi1, 2, 3, 4, 5, Li Yuelong1, 2, 3, 4, 5, Zhang Dekun1, 2, 3, 4, 5, Xu Shengzhi1, 2, 3, 4, 5, Zhao Ying1, 2, 3, 4, 5, Zhang Xiaodan1, 2, 3, 4, 5, ‡
       

The relationship between (αhv)2 and energy of CuSCN and 3% F4TCNQ-doped CuSCN film. The band gap can be determined by tangent of the curve to the base line. It can be found that the band gaps of the CuSCN and 3% F4TCNQ-doped CuSCN are about 3.66 eV and 3.67 eV.