Volume 137, Issue 22 e202500877
Forschungsartikel

Engineering an Excellent β-BaB2O4-Inspired UV Nonlinear Optical Material Through Secondary Building Unit Substitution

Lingli Wu

Lingli Wu

State Key Laboratory of Functional Crystals and Devices Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002 China

Fujian College, University of Chinese Academy of Sciences, Fuzhou, Fujian, 350002 China

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Chensheng Lin

Chensheng Lin

State Key Laboratory of Functional Crystals and Devices Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002 China

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Haotian Tian

Haotian Tian

State Key Laboratory of Functional Crystals and Devices Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002 China

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Tao Yan

Tao Yan

State Key Laboratory of Functional Crystals and Devices Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002 China

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Bing-Xuan Li

Bing-Xuan Li

State Key Laboratory of Functional Crystals and Devices Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002 China

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Huixin Fan

Huixin Fan

State Key Laboratory of Functional Crystals and Devices Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002 China

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Yujie Fan

Yujie Fan

State Key Laboratory of Functional Crystals and Devices Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002 China

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Shunda Yang

Shunda Yang

State Key Laboratory of Functional Crystals and Devices Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002 China

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Min Luo

Corresponding Author

Min Luo

State Key Laboratory of Functional Crystals and Devices Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002 China

E-mail: [email protected]

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First published: 17 March 2025

Abstract

The development of nonlinear optical (NLO) crystals with tailored properties has been a long-standing pursuit, yet remains challenging to achieve. Herein, we report the successful synthesis of a novel high-performance UV NLO material, Li3[Be3(OH)3(C3H2O4)3]·7H2O (LBOC), by substituting the [B3O6] functional building units (FBUs) in the classic β-BaB2O4 (β-BBO) with meticulously designed [Be3(OH)3(C3H2O4)3]3− secondary building units (SBUs). The [Be3(OH)3(C3H2O4)3]3− SBUs within LBOC preserve the ordered arrangement of the [B3O6] FBUs found in β-BBO, enabling LBOC to inherit the strong second harmonic generation (SHG) response from β-BBO. Additionally, the increased dimensionality of the [Be3(OH)3(C3H2O4)3]3− SBUs, compared to the planar [B3O6] FBUs, leads to a reduction in optical anisotropy. Consequently, LBOC demonstrates a moderate birefringence of [email protected] nm, lower than that of β-BBO ([email protected] nm). Notably, bulk crystals of LBOC can be easily grown using a straightforward solution evaporation method, making it a promising candidate for UV NLO applications. This strategic design of the SBU opens new avenues for the rational development of NLO crystals with tailored properties.

Conflict of Interests

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available in the supplementary material of this article.

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