A Hybrid Halide Perovskite Birefringent Crystal

被引：114

作者：

Huang, Weiqi ^{[1
]}

Zhang, Xu ^{[3
]}

Li, Yanqiang ^{[1
]}

Zhou, Yang ^{[1
]}

Chen, Xin ^{[1
]}

Li, Xiaoqi ^{[1
]}

Wu, Fafa ^{[1
]}

Hong, Maochun ^{[1
]}

Luo, Junhua ^{[1
,2
]}

Zhao, Sangen ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Fujian, Peoples R China

[2] Fujian Sci & Technol Innovat Lab Optoelect Inform, Fuzhou 350108, Peoples R China

[3] Jiangxi Univ Sci & Technol, Sch Sci, Ganzhou 341000, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2022年 / 61卷 / 22期

基金：

中国国家自然科学基金;

关键词：

Birefringent Crystal; Halide Perovskites; Optical Anisotropy; NONLINEAR-OPTICAL CRYSTAL; COEFFICIENTS; ANISOTROPY; GROWTH;

D O I：

10.1002/anie.202202746

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Birefringent crystals that can modulate the polarization of light play a significant role in modern optical devices including polarizing microscopes, optical isolators, and achromatic quarter-wave plates. To date, commercial birefringent crystals are exclusively limited to purely inorganic compounds. Here we report a new organic-inorganic hybrid halide, MLAPbBr(4) (MLA=melamine), which features a (110)-oriented layered perovskite structure. Although the 6s(2) lone-pair electrons of Pb2+ cations are stereochemically inert, MLAPbBr(4) exhibits a birefringence of 0.322@550 nm, which exceeds those of all commercial birefringent crystals. The first-principles calculations reveal that this birefringence should be ascribed to the highly dislocated pi-conjugation of MLA cations and high distortion of PbBr6 octahedra. This work highlights the persistently neglected great potential of hybrid halide perovskites as birefringent crystals.

引用

页数：4

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