共 12 条
Chemical substitution-oriented design of a new polar PbFIO3 achieving a balance between large second-harmonic generation response and wide band gap
被引:12
|作者:
Xu, Yiyi
[1
]
Lin, Chensheng
[1
]
Zhao, Dan
[2
]
Li, Bingxuan
[1
]
Cao, Liling
[1
]
Ye, Ning
[3
]
Luo, Min
[1
]
机构:
[1] Chinese Acad Sci, Fujian Inst Res Struct Matter, Key Lab Optoelect Mat Chem & Phys, Fuzhou 350002, Fujian, Peoples R China
[2] Henan Polytech Univ, Coll Chem & Chem Engn, Jiaozuo 454000, Henan, Peoples R China
[3] Tianjin Univ Technol, Inst Funct Crystal, Tianjin Key Lab Funct Crystal Mat, Tianjin 300384, Peoples R China
基金:
中国国家自然科学基金;
关键词:
Chemical substitution;
Aurivillius-type structure;
Large SHG response;
Wide band gap;
NONLINEAR-OPTICAL MATERIALS;
RB;
IODATE;
FLUORIDE;
CS;
CRYSTALS;
LAYER;
OXIDE;
NH4;
D O I:
10.1016/j.scriptamat.2021.114347
中图分类号:
TB3 [工程材料学];
学科分类号:
0805 ;
080502 ;
摘要:
A new polar iodate fluoride, PbFIO3, was designed via multisite substitution by taking BiO(IO3) as a prototype. It crystalizes in the polar space group Iba2. Similar to BiO(IO3), it has an Aurivillius-type cationic [PbF](+) layer. As regarding IO3 polyhedron in PbFIO3, they inherit the beneficial arrangement of IO3 polyhedron in BiO(IO3), which result in the strong second-harmonic generation (SHG) response about 8 times that of KH2PO4 (KDP). In addition, benefiting from the introduction of strong electronegative F atoms replacing the O atoms of 2D (Bi2O2)(2+) layer, PbFIO3 exhibits a larger band gap about 3.87 eV compared to BiO(IO3) (3.3 eV). Besides strong SHG response and wide band gap, PbFIO3 possess a moderate birefringence of 0.06@546.1 nm as well. These superior linear and nonlinear optical (NLO) properties make PbFIO3 being a potential NLO crystal. (C) 2021 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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