Solution synthesis and phase control of inorganic perovskites for high-performance optoelectronic devices.

Research paper by Jia J Liang, Caixing C Wang, Peiyang P Zhao, Zhipeng Z Lu, Yue Y Ma, Zhaoran Z Xu, Yanrong Y Wang, Hongfei H Zhu, Yi Y Hu, Guoyin G Zhu, Lianbo L Ma, Tao T Chen, Zuoxiu Z Tie, Jie J Liu, Zhong Z Jin

Indexed on: 10 Aug '17Published on: 10 Aug '17Published in: Nanoscale


An efficient method to synthesize well-crystallized inorganic cesium lead halide perovskites (CsPbX3, X = I or Br) with high yield and high reproducibility was proposed. Notably, the as-prepared CsPbI3 in the yellow orthorhombic phase (y-CsPbI3) can be easily converted to the black cubic perovskite phase CsPbI3 (b-CsPbI3) after thermal annealing. Furthermore, two-terminal photodetectors and all-inorganic perovskite solar cells based on b-CsPbI3 were fabricated, exhibiting high performances.