LiB5O5F2(OH)4: A new deep-ultraviolet birefringent crystal with [B5O5F2(OH)4] anionic group

被引：20
作者：
Chen, Zilong [1 ,2 ,3 ]
Zeng, Hao [1 ,2 ,3 ]
Chu, Dongdong [1 ,2 ,3 ,4 ]
Zhang, Fangfang [1 ,2 ,3 ,4 ]
Cheng, Meng [1 ,2 ,3 ,4 ]
Yang, Zhihua [1 ,2 ,3 ,4 ]
Pan, Shilie [1 ,2 ,3 ,4 ]
机构：
[1] Chinese Acad Sci, Key Lab Funct Mat & Devices Special Environm, Urumqi 830011, Peoples R China
[2] Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Urumqi 830011, Peoples R China
[3] Xinjiang Key Lab Elect Informat Mat & Devices, Urumqi 830011, Peoples R China
[4] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
来源：
SCIENCE CHINA-MATERIALS | 2022年 / 65卷 / 09期
基金：
中国国家自然科学基金;
关键词：
hydroxyfluorooxoborate; anionic group; birefringence; deep-ultraviolet; NONLINEAR-OPTICAL MATERIAL; GROWTH; FLUOROOXOBORATE;
D O I：
10.1007/s40843-021-1998-4
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A new deep-ultraviolet (DUV) birefringent crystal, LiB5O5F2(OH)(4) (LBOFH), was designed and synthesized by a high-temperature solution method. Its structure features a [B5O5F2(OH)(4)] anionic group that is constructed by four pi-conjugated units, i.e., two [BO3] units and two [BO(OH)(2)] units connected by the [BO2F2] unit, which forms a near-coplanar configuration. The group exhibits large anisotropic polarizability and highest unoccupied molecular orbital-lowest unoccupied molecular orbital (HUMO-LUMO) gap, thus providing a good balance between the large birefringence (0.124 at 546 nm) and band gap (7.99 eV) in LBOFH. This work suggests new possibilities for the design and fabrication of advanced DUV birefringent crystals using the novel anionic group and the expansion of their alternative system with new hydroxyfluorooxobo rates.
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收藏
页码：2585 / 2590
页数：6
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