层状季化物ACuZnS2 （A = K, Rb, Cs）的溶剂热合成、表征及光致发光性能

IF 3.2 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Solid State Chemistry Pub Date : 2025-05-10 DOI:10.1016/j.jssc.2025.125418

Hai Li , Jiahao Huang , Xin Tan , Xiaofang Lai , Jun Deng , Duan Zhao , Shaoming Zeng , Jikang Jian

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引用次数: 0

摘要

以乙二胺为溶剂，用溶剂热法合成了ACuZnS2 (A = K, Rb, Cs)，并对其进行了结构、磁性和光学等方面的表征。它们采用thcr2si2型结构（空间群I4/mmm），由二维[CuZnS2]−1层和碱金属层交替组成。根据磁化和光学测量，这三种化合物被发现是顺磁性半导体。光学带隙约为2.75 eV，并且首次观察到每种化合物的两个光致发光带。绿色发光可归因于局域Cu+发射能级，红色发光可归因于激子态。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Solvothermal syntheses, characterization and photoluminescence properties of layered quaternary sulfides ACuZnS2 (A = K, Rb, Cs)

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Solvothermal syntheses, characterization and photoluminescence properties of layered quaternary sulfides ACuZnS2 (A = K, Rb, Cs)

Three layered quaternary sulfides, ACuZnS₂ (A = K, Rb, Cs) have been synthesized by a facile solvothermal method using ethylenediamine as solvent and characterized by a combination of structural, magnetic, and optical measurements. They adopt the ThCr₂Si₂-type structure (space group I4/mmm) and are composed of alternating two-dimensional [CuZnS₂]⁻¹ layers and alkali metal layers. Based on magnetization and optical measurements, these three compounds are found to be paramagnetic semiconductors. The optical band gap is around 2.75 eV and for the first time two photoluminescence bands are observed for each compound. The green luminescence can be ascribed to a localized Cu⁺ emitting level and the red one to an excitonic state.

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来源期刊

Journal of Solid State Chemistry 化学-无机化学与核化学

CiteScore

6.00

自引率

9.10%

发文量

848

审稿时长

25 days

期刊介绍： Covering major developments in the field of solid state chemistry and related areas such as ceramics and amorphous materials, the Journal of Solid State Chemistry features studies of chemical, structural, thermodynamic, electronic, magnetic, and optical properties and processes in solids.