卤化物
红外线的
带隙
红外光谱学
Crystal(编程语言)
联轴节(管道)
非线性光学
材料科学
化学
结晶学
无机化学
光电子学
非线性系统
光学
物理
有机化学
量子力学
计算机科学
冶金
程序设计语言
作者
Haonan Liu,Zhongfu Song,Hongping Wu,Zhanggui Hu,Jing Wang,Yicheng Wu,Hongwei Yu
出处
期刊:ACS materials letters
[American Chemical Society]
日期:2022-07-25
卷期号:4 (9): 1593-1598
被引量:26
标识
DOI:10.1021/acsmaterialslett.2c00485
摘要
Metal chalcogenides, oxides, and halides are the three most typical materials classes for mid-infrared nonlinear optical (mid-IR NLO) crystals that can expand the spectral ranges of solid-state lasers to the mid-IR region. However, it is difficult for each of them to satisfy all the property requirements of mid-IR NLO crystals owing to their own defects. On the contrary, combining multiple anionic units as much as possible to construct heteroanionic compounds is an effective strategy for the design of new high-performance IR NLO crystals. Although in recent research, a series of heteroanionic materials containing two types of anions (i.e., chalcogenides-halides, oxychalcogenides, and oxyhalides) have been reported, the compounds that contain all three types of anions have still been unexplored. Herein, we report the first IR NLO crystal [Ba2F2][Ge2O3S2], which contains all three typical anions (O2–, S2–, and F–) and satisfies the key property requirements as a promising IR NLO candidate, including a strong SHG response (∼1.4× AgGaS2), a large band gap (Eg = 4.45 eV), and wide IR transmission (0.24–9.0 μm). This research indicates that coupling different types of anions in one compound is a more attractive strategy to explore new IR NLO materials with excellent properties.
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