Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 3, Issue 37, Pages 9588-9593Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5tc01687h
Keywords
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Funding
- National Science Foundation of China [91022036, 11174297]
- National Key Fundamental Research (973) Program of China [2010CB630701]
- National High Technology Research and Development (863) Program of China [2015AA034203]
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To search for a new nonlinear optical (NLO) material to be used in the mid-IR region with excellent comprehensive performance including high laser damage threshold (LDT), K2SbF2Cl3 has been synthesized by the hydrothermal method, and its potential as such a new material is evaluated for the first time. Its powder shows phase-matchable second harmonic generation (SHG) response of approximately 4 times as strong as that of KH2PO4 (KDP). Its optical band gap is 4.01 eV, which is much wider than the band gaps of the currently commercialised IR NLO crystals. This means that K2SbF2Cl3 will exhibit a much higher LDT. Its powder also exhibits excellent transparency in the range of 0.31-14 mm and good thermal stability. The relationship between the composition, crystal structure and properties is discussed. These results indicate that K2SbF2Cl3 is a promising candidate for IR NLO materials.
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