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Li[LiCs 2 Cl][Ga 3 S 6 ]: A Nanoporous Framework of GaS 4 Tetrahedra with Excellent Nonlinear Optical Performance
Author(s) -
Liu BinWen,
Jiang XiaoMing,
Li BingXuan,
Zeng HuiYi,
Guo GuoCong
Publication year - 2020
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201912416
Subject(s) - chalcogenide , band gap , nanoporous , tetrahedron , infrared , materials science , ionic bonding , nonlinear optical , optoelectronics , nanotechnology , chemistry , nonlinear system , crystallography , ion , optics , physics , quantum mechanics , organic chemistry
A large nonlinear optical (NLO) coefficient and a wide band gap are two crucial but contradictory parameters that are difficult to achieve simultaneously in a single infrared (IR) NLO compound. A salt‐inclusion chalcogenide (SIC), Li[LiCs 2 Cl][Ga 3 S 6 ] ( 1 ), was prepared that presents a nanosized tunnel framework constructed from monotype chalcogenide tetrahedra. Highly oriented covalent GaS 4 tetrahedra in the host lead to a moderate second harmonic generation response (0.7 AgGaS 2 ), and ionic guests effectively broaden the band gap to the widest value (4.18 eV) among all IR NLO chalcogenides, thereby achieving a remarkable balance between NLO efficiency and band gap.
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