Journal
DALTON TRANSACTIONS
Volume 47, Issue 6, Pages 1911-1917Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7dt04443g
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Funding
- National Natural Science Foundation of China [91622124, 91022036]
- China 863 projects [2015AA034203]
- Youth Innovation Promotion Association, CAS
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Using an ion-substitution strategy, herein, a new polar material, Pb-3(SeO3)Br-4, with a greatly enhanced SHG response has been successfully designed and synthesized through a hydrothermal reaction. Pb-3(SeO3)Br-4 crystallizes in the NCS space group P2(1)2(1)2(1) and consists of a three-dimensional framework formed by interconnecting one-dimensional chains, with a good thermal stability up to 230 degrees C. This compound exhibits a phase-matchable SHG response as strong as that of KH2PO4 (KDP) and a relatively wide mid-infrared (mid-IR) transparent window. Moreover, the optical band gap of Pb-3(SeO3)Br-4 reaches about 3.35 eV, thus leading to a high laser damage threshold (LDT) of 67 MW cm(-2), which is over 12 times that of AgGaS2 (<5 MW cm(-2)) measured under the same condition. All these findings suggest that Pb-3(SeO3)Br-4 would be a candidate for an NLO material in the mid-IR region.
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