Pb2BO3Cl: A Tailor‐Made Polar Lead Borate Chloride with Very Strong Second Harmonic Generation |
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| Authors: | Dr Guohong Zou Dr Chensheng Lin Hongil Jo Gnu Nam Prof?Dr Tae‐Soo You Prof?Dr Kang Min Ok |
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| Institution: | 1. Department of Chemistry, Chung-Ang University, Seoul, Republic of Korea;2. Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, China;3. Department of Chemistry, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea |
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| Abstract: | A meticulously designed, polar, non‐centrosymmetric lead borate chloride, Pb2BO3Cl, was synthesized using KBe2BO3F2 (KBBF) as a model. Single‐crystal X‐ray diffraction revealed that the structure of Pb2BO3Cl consists of cationic Pb2(BO3)]+ honeycomb layers and Cl? anions. Powder second harmonic generation (SHG) measurements on graded polycrystalline Pb2BO3Cl indicated that the title compound is phase‐matchable (type I) and exhibits a remarkably strong SHG response, which is approximately nine times stronger than that of potassium dihydrogen phosphate, and the largest efficiency observed in materials with structures similar to KBBF. Further characterization suggested that the compound melts congruently at high temperature and has a wide transparency window from the near‐UV to the mid‐IR region. |
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| Keywords: | crystal engineering lead borate chloride nonlinear optical properties second harmonic generation X-ray diffraction |
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