紫外线
氟化物
硫酸盐
八面体
二次谐波产生
离子
化学
结晶学
带隙
非线性光学
非线性光学
材料科学
分析化学(期刊)
无机化学
光电子学
晶体结构
非线性系统
光学
物理
激光器
有机化学
冶金
量子力学
色谱法
作者
Xuehua Dong,Ling Huang,Cuifang Hu,Hongmei Zeng,Zhien Lin,Xin Wang,Kang Min Ok,Guohong Zou
标识
DOI:10.1002/anie.201900637
摘要
Abstract A novel noncentrosymmetric (NCS) polar fluoride sulfate, CsSbF 2 SO 4 , was obtained by ionothermal synthesis. A meticulously designed co‐substitution approach was used to successfully replace the [TiO 6 ] 8− and [PO 4 ] 3− functional groups in KTiOPO 4 (KTP) with [SbO 4 F 2 ] 7− and [SO 4 ] 2− units, respectively. The structure of CsSbF 2 SO 4 features a pseudo‐3D framework consisting of interconnected 1D [SbF 2 O 2 SO 4 ] 5− chains of corner‐sharing [SbO 4 F 2 ] 7− octahedra and [SO 4 ] 2− tetrahedra. The title compound exhibits a sharply enlarged band gap compared to its parent compound, KTP, benefitting from the introduction of F − ions and the displacement of Sb 3+ cations. Second harmonic generation (SHG) measurements manifested that CsSbF 2 SO 4 is phase‐matchable and revealed a strong SHG response of about 3.0 KH 2 PO 4 (KDP), which is the highest value reported for any metal sulfate reported to date. The reported fluoride sulfate is a promising near ultraviolet (UV) nonlinear optical (NLO) material.
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