期刊
CHEMICAL COMMUNICATIONS
卷 57, 期 42, 页码 5175-5178出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1cc01275d
关键词
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资金
- national natural science foundation of China [21771159, 22071212]
- Qinglan project from Yangzhou University
Novel sulfides AAgGa(6)S(10) with unique structures and excellent optical properties were synthesized via solid-state reaction, showing great potential for a wide range of applications.
Obtaining new nonlinear-optical (NLO) materials with strong responses and wide band gaps is a hot topic in the laser field. Here, a series of sulfides AAgGa(6)S(10) (A = K, Rb, Cs) were obtained by a facile solid-state reaction routine. They crystallize in the noncentrosymmetric space group Cc with a new structure-type. Their 3D structures are built by an unprecedented {[AgGa6S10](-)}(infinity) anionic framework, which can be considered as the 1 : 1 intergrowth of the AgGaS2 and Ga2S3 structural slabs. They exhibit moderate responses similar to 0.7/0.5/0.6 x AGS and the widest bandgaps among NLO chalcogenides containing independent Ag sites, suggesting that they may have high laser-induced damage thresholds, which is verified by the experimental 1.5/3/4 x AGS. This study not only opens a new system of NLO materials, but also provides a reliable design strategy for future NLO materials.
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