Pb18O8Cl15I5: A Polar Lead Mixed Oxyhalide with Unprecedented Architecture and Excellent Infrared Nonlinear Optical Properties

被引：145

作者：

Chen, Xinglong ^{[1
]}

Jing, Qun ^{[2
]}

Ok, Kang Min ^{[1
]}

机构：

[1] Sogang Univ, Dept Chem, 35 Baekbeom Ro, Seoul 04107, South Korea

[2] Xinjiang Univ, Sch Phys Sci & Technol, 666 Shengli Rd, Urumqi 830046, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2020年 / 59卷 / 46期

基金：

新加坡国家研究基金会; 中国国家自然科学基金;

关键词：

crystal growth; materials science; nonlinear optics; oxyhalides; second-harmonic generation; STRONG 2ND-HARMONIC GENERATION; LASER DAMAGE THRESHOLD; CRYSTAL-STRUCTURE; METAL-OXIDES; ZEOLITE-X; BAND-GAP; DESIGN; RB; PREDICTION; REGION;

D O I：

10.1002/anie.202009541

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

To develop high-performance nonlinear optical (NLO) materials for infrared (IR) applications, we have applied a rational element-composition design strategy and investigated the unexplored PbO-PbCl2-PbI(2)system. By doing so, we discovered a new polar lead mixed oxyhalide, Pb18O8Cl15I5, the first synthetic metal oxyhalide combining both Cl(-)and I-. Pb(18)O(8)Cl(15)I(5)reveals an unprecedented structural feature with two different dimensional types of oxocentered Pb-O units, namely, [O4Pb8](8+)clusters and [OPb2](2+)chains. Centimeter-sized single crystals of Pb(18)O(8)Cl(15)I(5)have been successfully grown under ambient conditions. Remarkably, Pb(18)O(8)Cl(15)I(5)satisfies all fundamental yet rigorous criteria for high-performance IR NLO materials, exhibiting the widest IR transparency (up to 16.0 mu m) among oxide-based crystals, strong second-harmonic generation response (1.05xAgGaS(2)), superior birefringence (0.086 at 636 nm), and a high laser-induced damage threshold (8.5xAgGaS(2)).

引用

页码：20323 / 20327

页数：5

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