A Two‐Dimensional Hybrid Perovskite With Heat Switching Birefringence

Author:

Wang Ziyi1,Chen Xu1,Song Yipeng1,Du Zhipeng1,Zhou Yang1,Li Minjuan1,Huang Weiqi1,Xu Qianting1,Li Yanqiang1,Zhao Sangen12ORCID,Luo Junhua12

Affiliation:

1. State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 350002 Fuzhou Fujian China

2. Fujian Science and Technology Innovation Laboratory for Optoelectronic Information of China 350108 Fuzhou Fujian China

Abstract

AbstractBirefringent crystals that can switch light polarization have important applications in optoelectronics. In the last decades, birefringence is mostly optimized by chemical strategies. Recently, switching birefringence by physical means has attracted much attention. Here, this work reports the observation of heat switching birefringence in a 2D layered hybrid halide perovskite (C2N3H4)2PbCl4 ((C2N3H4)+=1,2,4‐triazolium). This heat switching birefringence leads to a significant change in the interference color for the crystal plate under the illumination of orthogonal polarized light. Structure analyses reveal a heat dependent structure transition in (C2N3H4)2PbCl4, whose birefringence is switched by the change in the distortion degree of PbCl6 octahedron. This discovery may be beneficial to the further development of stimuli‐responsive polarization optical devices.

Funder

National Natural Science Foundation of China

Natural Science Foundation of Fujian Province

Youth Innovation Promotion Association of the Chinese Academy of Sciences

Key Research Program of Frontier Science, Chinese Academy of Sciences

Fujian Institute of Innovation, Chinese Academy of Sciences

Publisher

Wiley

Subject

General Chemistry,Catalysis

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