Salt-inclusion sulfides [K4Cl][MII11In9S26] (MII = Zn, Cd) displaying robust nonlinear optical activity

Yang-Ping Zhang; Shao-Min Pei; Xiao-Ming Jiang; Bin-Wen Liu; Guo-Cong Guo

doi:10.1039/D3QM01130E

Salt-inclusion sulfides [K₄Cl][M^II₁₁In₉S₂₆] (M^II = Zn, Cd) displaying robust nonlinear optical activity†

Yang-Ping Zhang,^ab Shao-Min Pei,^a Xiao-Ming Jiang,

^a Bin-Wen Liu

*^a and Guo-Cong Guo*^a

Author affiliations

* Corresponding authors

^a State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China
E-mail: bwliu@fjirsm.ac.cn, gcguo@fjirsm.ac.cn

^b School of Physical Science and Technology, Shanghai Tech University, Shanghai 201210, P. R. China

Abstract

Noncentrosymmetric salt-inclusion chalcogenides (SICs) are a burgeoning class of second-order nonlinear optical (NLO) materials distinguished by their exceptional optical properties. These materials often exhibit robust second-harmonic generation (SHG) responses and possess wide band gaps that typically correspond to their impressive laser-induced damage threshold (LIDT). In this study, we present two isostructural salt-inclusion chalcogenides, namely [K₄Cl][Zn₁₁In₉S₂₆] (1) and [K₄Cl][Cd₁₁In₉S₂₆] (2), which consist of highly parallel-oriented host [M^II₁₁In₉S₂₆]³⁻ frameworks, with guest [K₄Cl]³⁺ ions incorporated to enhance structural stability and maintain charge balance. Notably, compounds 1 and 2 exhibit favorable NLO properties, including strong nonphase matching SHG intensities (1.9 and 5.7 × AgGaS₂ for particle sizes of 30–50 μm) under 1910 nm laser irradiation. Furthermore, compounds 1 and 2 demonstrate suitable band gaps (2.48 and 2.61 eV) and exhibit minimal anisotropy in their thermal expansion coefficients (ranging from 0.09 to 1.01), contributing to their significant LIDT (7.0 and 4.6 × AgGaS₂@1064 nm), respectively.

This article is part of the themed collection: Celebrating the 10th Anniversary of ShanghaiTech University

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Article information

DOI: https://doi.org/10.1039/D3QM01130E
Article type: Research Article
Submitted: 20 Oct 2023
Accepted: 09 Apr 2024
First published: 20 Apr 2024

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Mater. Chem. Front., 2024, Advance Article

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Salt-inclusion sulfides [K₄Cl][M^II₁₁In₉S₂₆] (M^II = Zn, Cd) displaying robust nonlinear optical activity

Y. Zhang, S. Pei, X. Jiang, B. Liu and G. Guo, Mater. Chem. Front., 2024, Advance Article , DOI: 10.1039/D3QM01130E

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