One-Dimensional Perovskite RbGeI3 with Large Optical Anisotropy

IF 4.3 2区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Pub Date : 2025-02-12 DOI:10.1021/acs.inorgchem.5c00212

Huige Chen, Deshuai Xiao, Pifu Gong, Xinyuan Zhang, Zheshuai Lin, Lei Kang

引用次数: 0

Abstract

Inorganic halide perovskites have been regarded as potential candidates for nonlinear optical (NLO) materials due to their large bandgaps and second-harmonic generation (SHG) effects. If these crystals exhibit large optical anisotropy, their birefringent phase-matching ability will undergo enhancement. In this study, a one-dimensional (1D) halide perovskite, RbGeI₃, was experimentally synthesized. Its [GeI₃]_∞¹ double chains are parallelly arranged, resulting in a large structural anisotropy with a birefringence of 0.122@1064 nm, the largest one in reported NLO-active inorganic halide perovskites, as determined from first-principles calculations. Furthermore, a comprehensive characterization involving Raman spectroscopy, the optical absorption spectrum, and powder SHG measurement was conducted to assess its suitability for NLO applications.

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无机卤化物包覆晶石因其大带隙和二次谐波发生（SHG）效应而被视为非线性光学（NLO）材料的潜在候选材料。如果这些晶体表现出较大的光学各向异性，其双折射相匹配能力就会增强。本研究通过实验合成了一维（1D）卤化物包晶 RbGeI3。它的[GeI3]∞1双链平行排列，从而产生了很大的结构各向异性，双折射为 0.122@1064 nm，这是第一原理计算所确定的在已报道的具有 NLO 活性的无机卤化物包晶中最大的双折射。此外，还进行了包括拉曼光谱、光吸收光谱和粉末 SHG 测量在内的综合表征，以评估其在 NLO 应用中的适用性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Inorganic Chemistry 化学-无机化学与核化学

CiteScore

7.60

自引率

13.00%

发文量

1960

审稿时长

1.9 months

期刊介绍： Inorganic Chemistry publishes fundamental studies in all phases of inorganic chemistry. Coverage includes experimental and theoretical reports on quantitative studies of structure and thermodynamics, kinetics, mechanisms of inorganic reactions, bioinorganic chemistry, and relevant aspects of organometallic chemistry, solid-state phenomena, and chemical bonding theory. Emphasis is placed on the synthesis, structure, thermodynamics, reactivity, spectroscopy, and bonding properties of significant new and known compounds.