Polar Solvent Induced Lattice Distortion of Cubic CsPbI3 Nanocubes and Hierarchical Self-Assembly into Orthorhombic Single-Crystalline Nanowires
Jian-Kun Sun, Sheng Huang, Xiao-Zhi Liu, Quan Xu, Qing-Hua Zhang, Wen-Jie Jiang, Ding-Jiang Xue, Jia-Chao Xu, Jing-Yuan Ma, Jie Ding, Qjan-Qing Ge, Lin Gu, Xiao-Hong Fang, Hai-Zheng Zhong, Jin-Song Hu, Li-Jun Wan
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | AMER CHEMICAL SOC | Published : 2018
Despite the recent surge of interest in inorganic lead halide perovskite nanocrystals, there are still significant gaps in their stability disturbance and the understanding of their destabilization, assembly, and growth processes. Here, we discover that polar solvent molecules can induce the lattice distortion of ligand-stabilized cubic CsPbI3, leading to the phase transition into orthorhombic phase, which is unfavorable for photovoltaic applications. Such lattice distortion triggers the dipole moment on CsPbI3 nanocubes, which subsequently initiates the hierarchical self-assembly of CsPbI3 nanocubes into single-crystalline nanowires. The systematic investigations and in situ monitoring on t..View full abstract
Awarded by National Key Project on Basic Research
Awarded by National Natural Science Foundation of China
Awarded by Strategic Priority Research Program of the Chinese Academy of Sciences
This work was supported by the National Key Project on Basic Research (2015CB932302), National Natural Science Foundation of China (21573249, and 91645123) and the Strategic Priority Research Program of the Chinese Academy of Sciences (XDB12020100).