Volume 135, Issue 7 e202218048
Forschungsartikel

Na2Ba[Na2Sn2S7]: Structural Tolerance Factor-Guided NLO Performance Improvement

Dr. Rui-An Li

Dr. Rui-An Li

Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, 100875 Beijing, P. R. China

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Qian-Qian Liu

Qian-Qian Liu

Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, 100875 Beijing, P. R. China

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Xin Liu

Xin Liu

Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, 100875 Beijing, P. R. China

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Dr. Youquan Liu

Dr. Youquan Liu

Key Lab of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 100190 Beijing, P. R. China

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Prof. Xingxing Jiang

Prof. Xingxing Jiang

Key Lab of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 100190 Beijing, P. R. China

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Prof. Zheshuai Lin

Prof. Zheshuai Lin

Key Lab of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 100190 Beijing, P. R. China

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Dr. Fei Jia

Dr. Fei Jia

Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, 100875 Beijing, P. R. China

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Dr. Lin Xiong

Dr. Lin Xiong

Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, 100875 Beijing, P. R. China

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Prof. Ling Chen

Corresponding Author

Prof. Ling Chen

Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, 100875 Beijing, P. R. China

Center for Advanced Materials Research, Beijing Normal University, 519087 Zhuhai, P. R. China

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Prof. Li-Ming Wu

Corresponding Author

Prof. Li-Ming Wu

Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, 100875 Beijing, P. R. China

Center for Advanced Materials Research, Beijing Normal University, 519087 Zhuhai, P. R. China

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First published: 21 December 2022

Abstract

The strong mutual coupling of and even the opposite change in the key parameters, such as the band gap (Eg) and second-order harmonic generation (SHG), leads to the extreme scarcity in high-performance IR nonlinear optical (NLO) chalcogenides. Herein, we report 8 new sulfides, Na2Ba[(AgxNa1−x)2Sn2S7] (1, x=0; 1series, x=0.1–0.6; Na2Ba[(Li0.58Na0.42)2Sn2S7], 1-0.6Li); Na2Sr[Cu2Sn2S7] (2); and Na2Ba[Cu2Sn2S7] (3). We use the structural tolerance factor (urn:x-wiley:00448249:media:ange202218048:ange202218048-math-0001 ) to connect the chemical composition, crystal structure, and NLO properties. Guided by these correlations, a better balance between Eg and SHG is realized in 1, which exhibits a large Eg of 3.42 eV and excellent NLO properties (SHG: 1.5×AGS; laser-induced damage threshold: 12×AGS), representing the best performance among the known Hg- or As-free sulfides to date.

Conflict of interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available in the supplementary material of this article.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.