Templated growth of oriented layered hybrid perovskites on 3D-like perovskites

Jifei Wang, Shiqiang Luo, Yun Lin, Yifu Chen, Yehao Deng, Zhimin Li, Ke Meng, Gang Chen, Tiantian Huang, Si Xiao, Han Huang, Conghua Zhou, Liming Ding, Jun He, Jinsong Huang () and Yongbo Yuan ()
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Jifei Wang: Central South University
Shiqiang Luo: Central South University
Yun Lin: University of North Carolina at Chapel Hill
Yifu Chen: Central South University
Yehao Deng: University of North Carolina at Chapel Hill
Zhimin Li: Shanghai Tech University
Ke Meng: Shanghai Tech University
Gang Chen: Shanghai Tech University
Tiantian Huang: Central South University
Si Xiao: Central South University
Han Huang: Central South University
Conghua Zhou: Central South University
Liming Ding: Center for Excellence in Nanoscience (CAS), Key Laboratory of Nanosystem and Hierarchical Fabrication (CAS), National Center for Nanoscience and Technology
Jun He: Central South University
Jinsong Huang: University of North Carolina at Chapel Hill
Yongbo Yuan: Central South University

Nature Communications, 2020, vol. 11, issue 1, 1-9

Abstract: Abstract The manipulation of crystal orientation from the thermodynamic equilibrium states is desired in layered hybrid perovskite films to direct charge transport and enhance the perovskite devices performance. Here we report a templated growth mechanism of layered perovskites from 3D-like perovskites which can be a general design rule to align layered perovskites along the out-of-plane direction in films made by both spin-coating and scalable blading process. The method involves suppressing the nucleation of both layered and 3D perovskites inside the perovskite solution using additional ammonium halide salts, which forces the film formation starts from solution surface. The fast drying of solvent at liquid surface leaves 3D-like perovskites which surprisingly templates the growth of layered perovskites, enabled by the periodic corner-sharing octahedra networks on the surface of 3D-like perovskites. This discovery provides deep insights into the nucleation behavior of octahedra-array-based perovskite materials, representing a general strategy to manipulate the orientation of layered perovskites.

Date: 2020
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DOI: 10.1038/s41467-019-13856-1

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