期刊
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷 12, 期 34, 页码 8280-8284出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.1c01533
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资金
- National Natural Science Foundation of China [21833010, 61975207, 219210015, 51872297, 51890864]
- Key Research Program of Frontier Sciences of the Chinese Academy of Sciences [ZDBS-LY-SLH024]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB20010200, XDB20000000]
- Fujian Institute of Innovation in Chinese Academy of Sciences [FJCXY18010201]
- National Key Research and Development Program of China [2019YFA0210400]
- Key Laboratory of Functional Crystals and Laser Technology, TIPC, CAS [FCLT 202003]
- Key Laboratory of New Processing Technology for Nonferrous Metal AMP
- Materials, Ministry of Education/Guangxi Key Laboratory of Optical and Electronic Materials and Devices [20KF-11]
A new non-pi-conjugated deep-UV NLO material, K2Zn3(SO4)(HSO4)(2)F-4, has been successfully obtained by the hydrothermal method. It shows good phase matching properties and lower absorption edge, with a birefringence of 0.0126.
Deep-ultraviolet (deep-UV) (wavelengths of <200 nm) nonlinear optical (NLO) materials are playing an increasingly important role because of their significant technological applications in advanced scientific instruments. In recent years, the non-pconjugated systems have received extensive attention as new emerging sources of deep-UV NLO materials. Here, a new non-pi-conjugated deep-UV NLO material, K2Zn3(SO4)-(HSO4)(2)F-4, has been successfully obtained by the hydrothermal method. It has a layered structure formed by [Zn-3(SO4)(HSO4)(2)F-3](infinity) layers bridged via K-O and K-F bonds. Powder second-harmonic generation shows that K2Zn3(SO4)(HSO4)(2)F-4 can achieve phase matching, and the response is similar to 0.3 times that of KH2PO4. Remarkably, the single-crystal transmittance spectrum confirms that the absorption edge of K2Zn3(SO4)(HSO4)(2)F-4 is below 200 nm, and the experimentally measured birefringence is 0.0126 at lambda = 546 nm. Indepth first-principles calculations illustrate well the microscopic origin of the optical properties. This work enriches the structrual diversity of non-pi-conjugated deep-UV NLO materials.
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