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Deep‐Ultraviolet Nonlinear Optical Crystal Cs 2 Al 2 (B 3 O 6 ) 2 O: A Benign Member of the Sr 2 Be 2 (BO 3 ) 2 O Family with [Al 2 (B 3 O 6 ) 2 O] 2− Double Layers
Author(s) -
Fang Zhi,
Jiang Xingxing,
Duan Meihong,
Hou Zhanyu,
Tang Changcheng,
Xia Mingjun,
Liu Lijuan,
Lin Zheshuai,
Fan Feidi,
Bai Lei,
Chen Chuangtian
Publication year - 2018
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201801742
Subject(s) - beryllium , ultraviolet , crystal (programming language) , band gap , birefringence , crystal structure , materials science , boron , nonlinear optical , crystallography , optoelectronics , chemistry , optics , physics , nonlinear system , organic chemistry , quantum mechanics , computer science , programming language
For the explorations of deep ultraviolet (DUV) nonlinear optical (NLO) borates, a type of important optoelectronic material, the (BO 3 ) 3− group has been long regarded as the sole microscopic optically‐active unit, and toxic Be‐containing raw materials are frequently‐adopted. Herein, a new DUV NLO crystal, Cs 2 Al 2 (B 3 O 6 ) 2 O (CABO), was designed and synthesized by simultaneously replacing the (BO 3 ) 3− groups and Be 2+ cations for (B 3 O 6 ) 3− units and Al 3+ cations in Sr 2 Be 2 (BO 3 ) 2 O, which possesses a favorable structure, through a chemical co‐substitution approach. CABO exhibits a considerable DUV NLO capability because of the wide band gap and large birefringence originating from the [Al 2 (B 3 O 6 ) 2 O] 2− double layers. Remarkably, CABO melts congruently and does not contain the toxic beryllium, which is favorable for bulk‐size crystal growth and practical applications.