Pb3(SeO3)Br4: a new nonlinear optical material with enhanced SHG response designed via an ion-substitution strategy

Xiaoxiao Wang; Xingxing Jiang; Hongming Liu; Lei Yang; Zheshuai Lin; Zhanggui Hu; Xianggao Meng; Xingguo Chen; Jingui Qin

doi:10.1039/c7dt04443g

Pb₃(SeO₃)Br₄: a new nonlinear optical material with enhanced SHG response designed via an ion-substitution strategy

Dalton Trans. 2018 Feb 6;47(6):1911-1917. doi: 10.1039/c7dt04443g.

Authors

Xiaoxiao Wang¹, Xingxing Jiang, Hongming Liu, Lei Yang, Zheshuai Lin, Zhanggui Hu, Xianggao Meng, Xingguo Chen, Jingui Qin

Affiliation

¹ Hubei Key Laboratory on Organic and Polymeric Opto-electronic Materials, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China. xgchen@whu.edu.cn.

PMID: 29340387
DOI: 10.1039/c7dt04443g

Abstract

Using an ion-substitution strategy, herein, a new polar material, Pb₃(SeO₃)Br₄, with a greatly enhanced SHG response has been successfully designed and synthesized through a hydrothermal reaction. Pb₃(SeO₃)Br₄ crystallizes in the NCS space group P2₁2₁2₁ and consists of a three-dimensional framework formed by interconnecting one-dimensional chains, with a good thermal stability up to 230 °C. This compound exhibits a phase-matchable SHG response as strong as that of KH₂PO₄ (KDP) and a relatively wide mid-infrared (mid-IR) transparent window. Moreover, the optical band gap of Pb₃(SeO₃)Br₄ reaches about 3.35 eV, thus leading to a high laser damage threshold (LDT) of 67 MW cm^-2, which is over 12 times that of AgGaS₂ (<5 MW cm^-2) measured under the same condition. All these findings suggest that Pb₃(SeO₃)Br₄ would be a candidate for an NLO material in the mid-IR region.