![Highly compact TiO
<sub/>2</sub>
layer for efficient hole-blocking in perovskite solar cells]()
Highly compact TiO
<sub/>2</sub>
layer for efficient hole-blocking in perovskite solar cellsWu, Yongzhen; Yang, Xudong; Chen, Han; Zhang, Kun; Qin, Chuanjiang; Liu, Jian; Peng, Wenqin; Islam, Ashraful; Bi, Enbing; Ye, Fei; Yin, Maoshu; Zhang, Peng; Han, Liyuan · Applied Physics Express · 2014