BaF2TeF2(OH)2: A UV Nonlinear Optical Fluorotellurite Material Designed by Band-Gap Engineering

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...

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Bibliographic Details
Published in:Journal of the American Chemical Society 2020-03, Vol.142 (10), p.4616-4620
Main Authors: Zhou, Jinjie, Wu, Hongping, Yu, Hongwei, Jiang, Shutong, Hu, Zhanggui, Wang, Jiyang, Wu, Yicheng, Halasyamani, P. Shiv
Format: Article
Language:English
Online Access:Get full text
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Summary: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, BaF2TeF2(OH)2, which exhibits a pseudo-Aurivillius structure and crystallizes in a noncentrosymmetric and polar space group Pmn21. 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.
ISSN:0002-7863
1520-5126
DOI:10.1021/jacs.0c00702