LiGa(IO3)4: An Excellent NLO Material with Unprecedented 2D [Ga(IO3)4] Layer Synthesized by Aliovalent Substitution

Author:

Yang Shuoxing1,Wu Hongping1,Hu Zhanggui1,Wang Jiyang1,Wu Yicheng1,Yu Hongwei1ORCID

Affiliation:

1. Tianjin Key Laboratory of Functional Crystal Materials Institute of Functional Crystal College of Materials Science and Engineering Tianjin University of Technology Tianjin 300384 China

Abstract

AbstractNonlinear optical (NLO) crystals are indispensable for the solid‐state lasers for their ability to expand wavelength spectral to the regions where the directing lasing is difficult or even impossible, yet the rational design of a high‐performance NLO crystal remains a great challenge owing to the severe structural and properties’ requirements. Herein, a new noncentrosymmetric (NCS) and polar gallium iodate, LiGa(IO3)4, with a novel 2D anionic layer, is successfully designed and synthesized by the aliovalent substitution strategy based on classic α‐LiIO3. The 2D [Ga(IO3)4] layer in LiGa(IO3)4 is built from the GaO6 octahedra and highly polarizable units IO3. Compared with its parent compound, the partial replacement of A‐site Li+ cation with main group Ga3+ cation facilitates LiGa(IO3)4 to possess excellent NLO properties, including the large second‐harmonic generation (SHG) response (14 × KH2PO4 (KDP) @ 1064 nm), wide bandgap (4.25 eV), large birefringence (0.23 @ 1064 nm), and wide optical transparency from UV to mid‐IR. These reveal that LiGa(IO3)4 will be a promising NLO crystal.

Funder

National Natural Science Foundation of China

Tianjin Municipal Science and Technology Bureau

Publisher

Wiley

Subject

Biomaterials,Biotechnology,General Materials Science,General Chemistry

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