4.8 Article

Pb2B5O9I: An Iodide Borate with Strong Second Harmonic Generation

Journal

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 132, Issue 37, Pages 12788-12789

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/ja106066k

Keywords

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Funding

  1. National Natural Science Foundation of China [90922021, 90922022, 20773130, 20733003, 20821061, 20973175, 20773024]
  2. Chinese Academy of Sciences [KJCX2-YW-H20]
  3. New Century Excellent Talents at Universities of Fujian Province [HX2006-97]

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The combination of lone-pair effects on Pb2+ cations and the smaller electronegativity of I- anions into the pentaborate framework generates a phase-matchable material, Pb2B5O9I, with the largest powder SHG response among borates, about 13.5 times that of KDP (KH2PO4), and transparency over the near-UV to middle-IR region. DFT calculations on electronic structure and cutoff-energy-dependent SHG coefficients confirm these origins.

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