BaFTeF(OH)：一种通过带隙工程设计的紫外非线性光学氟碲酸盐材料。
BaFTeF(OH): A UV Nonlinear Optical Fluorotellurite Material Designed by Band-Gap Engineering.
作者信息
Zhou Jinjie, Wu Hongping, Yu Hongwei, Jiang Shutong, Hu Zhanggui, Wang Jiyang, Wu Yicheng, Halasyamani P Shiv
机构信息
Tianjin Key Laboratory of Functional Crystal Materials, Institute of Functional Crystal, Tianjin University of Technology, Tianjin 300384, China.
Department of Chemistry, University of Houston, 112 Fleming Building, Houston, Texas 77204-5003, United States.
出版信息
J Am Chem Soc. 2020 Mar 11;142(10):4616-4620. doi: 10.1021/jacs.0c00702. Epub 2020 Mar 2.
Balancing the wide band gap, large second harmonic generation (SHG) response, and moderate birefringence are significant but addressable challenges for designing nonlinear optical (NLO) materials. Based on the band-gap engineering in perovskite solar cell materials, we have successfully synthesized a new fluorotellurite, BaFTeF(OH), which exhibits a pseudo-Aurivillius structure and crystallizes in a noncentrosymmetric and polar space group 2. The physical property measurements show that this material can effectively balance the requirements among the short UV absorption edge (∼205 nm), large SHG response (∼3 × KDP) and moderate birefringence (∼0.078@350-700 nm) and is a promising ultraviolet NLO crystal.
对于设计非线性光学（NLO）材料而言，平衡宽带隙、大二阶谐波产生（SHG）响应和适度双折射是重大但可解决的挑战。基于钙钛矿太阳能电池材料中的带隙工程，我们成功合成了一种新型氟碲酸盐BaFTeF(OH)，它具有准钙钛矿结构，结晶于非中心对称的极性空间群2中。物理性质测量表明，这种材料能够有效平衡短紫外吸收边（约205 nm）、大SHG响应（约3×KDP）和适度双折射（约0.078@350 - 700 nm）之间的要求，是一种很有前景的紫外NLO晶体。
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