铍
材料科学
晶体结构
Crystal(编程语言)
卤素
紫外线
非线性光学
结晶学
光电子学
化学
非线性系统
有机化学
程序设计语言
物理
烷基
量子力学
计算机科学
作者
Jinjie Zhou,Youquan Liu,Hongping Wu,Hongwei Yu,Zheshuai Lin,Zhanggui Hu,Jing Wang,Yicheng Wu
标识
DOI:10.1002/anie.202008346
摘要
Abstract Designing deep‐ultraviolet (DUV) nonlinear‐optical (NLO) crystals is one of the major current research interests, but it faces a great challenge. In order to overcome the problem of crystal growth and the toxicity of BeO raw materials in KBe 2 BO 3 F 2 (KBBF), the only applicable DUV NLO crystal so far, we substitute Be 2+ cations with Zn 2+ in the KBBF structure and modify the halogen anions, by which three new Zn‐containing KBBF‐like compounds, CsZn 2 BO 3 X 2 (X 2 =F 2 , Cl 2 , and FCl), have been successfully synthesized. They all exhibit excellent NLO properties, including improved SHG responses (2.8–3.5×KDP) and short UV cut‐off edges (<190 nm). In comparison with KBBF, CsZn 2 BO 3 X 2 (X 2 =F 2 , Cl 2 , and FCl) are all chemically benign and have better growth habits, so they are all promising as DUV NLO crystals. Further study on structure–property relationships indicates that the mixing of halogen anions is a feasible strategy to enhance the SHG responses of the KBBF family.
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