γ-P4S3I2: a new metal-free infrared second-order nonlinear optical crystal designed by polymorphism strategy

Xin Zhao; Chensheng Lin; Shunda Yang; Haotian Tian; Chao Wang; Tao Yan; Jian Zhang; Bingxuan Li; Ning Ye; Min Luo

doi:10.1039/D2QI02313J

γ-P₄S₃I₂: a new metal-free infrared second-order nonlinear optical crystal designed by polymorphism strategy†

Xin Zhao,

^ab Chensheng Lin,

^a Shunda Yang,^a Haotian Tian,^ab Chao Wang,^ab Tao Yan,

*^ad Jian Zhang,

^d Bingxuan Li,^a Ning Ye^c and Min Luo

*^a

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* Corresponding authors

^a Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
E-mail: lm8901@fjirsm.ac.cn, yantao@fjirsm.ac.cn

^b University of Chinese Academy of Sciences, Beijing 100049, China

^c Tianjin Key Laboratory of Functional Crystal Materials, Institute of Functional Crystal, Tianjin University of Technology, Tianjin 300384, China

^d State Key Laboratory of Crystal Materials, Shandong University, Jinan, China

Abstract

A non-centrosymmetric metal-free thiophosphate, γ-P₄S₃I₂, was successfully synthesized utilizing polymorphism strategy in this study. γ-P₄S₃I₂ crystallized in the space group of P4₃ and featured paralleled (P₄S₃I₂)_n molecular clusters. Importantly, it exhibited promising nonlinear optical (NLO) performances, such as a phase-matchable second harmonic generation (SHG) efficiency (0.5 × AgGaS₂), wide band gap (2.38 eV), large birefringence (0.118@2050 nm), and wide infrared transparency, suggesting that γ-P₄S₃I₂ may be a potential IR NLO candidate.

This article is part of the themed collection: 2023 Inorganic Chemistry Frontiers HOT articles

Inorganic Chemistry Frontiers

γ-P₄S₃I₂: a new metal-free infrared second-order nonlinear optical crystal designed by polymorphism strategy†

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