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(NH4)Bi2(IO3)2F5: An Unusual Ammonium-Containing Metal Iodate Fluoride Showing Strong Second Harmonic Generation Response and Thermochromic Behavior |
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| Authors: | Dr Huixin Fan Prof Chensheng Lin Kaichuang Chen Dr Guang Peng Dr Bingxuan Li Prof Ge Zhang Prof Xifa Long Prof Ning Ye |
| Institution: | 1. 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
University of the Chinese Academy of Sciences, Beijing, 100049 China;2. 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;3. 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 College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian, 350007 P. R. China |
| Abstract: | An ammonium-containing metal iodate fluoride compound, (NH4)Bi2(IO3)2F5, featuring a two-dimensional double-layered framework constructed by BiO2F5]6? and BiO4F4]9? polyhedra, as well as IO3]? groups, was successfully synthesized. The well-ordered alignment of these SHG-active units leads to an extraordinary strong SHG response of 9.2 times that of KDP. Moreover, this compound possesses a large birefringence (Δn=0.0690 at 589.3 nm), a wide energy band gap (Eg=3.88 eV), and a high laser damage threshold (LDT; 40.2×AgGaS2). In particular, thermochromic behavior was observed for the first time in this type of compound. Such multifunctional crystals will expand the application of nonlinear optical materials. |
| Keywords: | Bismuth Metalliodatfluoride Nichtlineare Optik Obertonerzeugung Thermochromie |