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Ultra‐Broadband Near‐Infrared Luminescence of Ni 2+ : ZnO–Al 2 O 3 –SiO 2 Nanocomposite Glasses Prepared by Sol–Gel Method
Author(s) -
Zhou Shifeng,
Hao Jianhua,
Qiu Jianrong
Publication year - 2011
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2011.04671.x
Subject(s) - luminescence , nanocomposite , materials science , nanocrystal , spinel , sol gel , doping , infrared , analytical chemistry (journal) , mineralogy , nanotechnology , optics , optoelectronics , chemistry , metallurgy , physics , chromatography
We have studied the synthesis and near‐infrared luminescent properties of Ni 2+ ‐doped ZnO–Al 2 O 3 –SiO 2 nanocomposite glasses embedded activated spinel nanocrystals prepared using a sol–gel technique. Nanocrystal‐dependent optical properties in Ni 2+ ‐doped nanocomposite glasses were systematically investigated. We found that Ni 2+ ion is optically active only in the composite embedded nanocrystals, which can provide octahedral position with appropriate crystal field strength. Near‐infrared emission ranging from 1100 to 1600 nm was observed in the Ni 2+ ‐doped composite fabricated by sol–gel method. Such an ultra‐broadband luminescence from the nanocomposite could cover the infrared emission bands obtained from multiple rare earth ions ( Ho 3+ , Pr 3+ , and Tm 3+ ) doped glasses.