Peng Guang, Lin Chensheng, Ye Ning
Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China.
Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou, Fujian 350002, China.
J Am Chem Soc. 2020 Dec 9;142(49):20542-20546. doi: 10.1021/jacs.0c09866. Epub 2020 Nov 25.
Currently, to obtain new ultraviolet (UV) nonlinear optical (NLO) materials with large second-harmonic generation (SHG) response and short SHG phase-matching cutoff wavelength (λ) is still very challenging. Herein, through evolving the KBeBOF (KBBF) structure to a carbonate system, a novel hydroxycarbonate UV NLO crystal, NaZnCO(OH), was successfully synthesized. It not only possessed the typical structural characteristics of KBBF but also enhanced the bonding force between functional layers. Remarkably, in this crystal, the rare coexistence of a very large SHG response of 5.2 × KHPO (KDP, @1064 nm) and short type-I SHG λ of 201 nm had been achieved, indicating that it was a promising UV NLO crystal. This work showed the great significance of KBBF structure evolution and provided new opportunity to design UV NLO materials with good performance.
目前，要获得具有大的二次谐波产生（SHG）响应和短的SHG相位匹配截止波长（λ）的新型紫外（UV）非线性光学（NLO）材料仍然非常具有挑战性。在此，通过将KBeBOF（KBBF）结构演变为碳酸盐体系，成功合成了一种新型羟基碳酸盐UV NLO晶体NaZnCO(OH)。它不仅具有KBBF的典型结构特征，还增强了功能层之间的结合力。值得注意的是，在这种晶体中，实现了罕见的5.2×KHPO（KDP，@1064 nm）的非常大的SHG响应和201 nm的短I型SHG λ的共存，表明它是一种有前途的UV NLO晶体。这项工作展示了KBBF结构演化的重大意义，并为设计具有良好性能的UV NLO材料提供了新的机会。
