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    Low temperature photoluminescence of Cs2NaY1-xErxCl6 excited by synchrotron radiation

    Access Status
    Fulltext not available
    Authors
    Jia, Guohua
    Cheng, B.
    Duan, C.
    Tanner, P.
    Date
    2011
    Type
    Journal Article
    
    Metadata
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    Citation
    Jia, G. and Cheng, B. and Duan, C. and Tanner, P. 2011. Low temperature photoluminescence of Cs2NaY1-xErxCl6 excited by synchrotron radiation. Chemical Physics Letters. 515 (4-6): pp. 235-240.
    Source Title
    Chemical Physics Letters
    DOI
    10.1016/j.cplett.2011.09.033
    ISSN
    0009-2614
    School
    Nanochemistry Research Institute
    URI
    http://hdl.handle.net/20.500.11937/5698
    Collection
    • Curtin Research Publications
    Abstract

    Photoluminescent spectra have been recorded for Cs2NaY 1-xErxCl6 at room temperature (RT) and 10 K using synchrotron radiation. Striking differences are observed between RT and 10 K emission spectra. First, unusual quenching of emission from a higher energy level (4G11/2) at RT leads to dominant visible emission at 10 K from a lower one (4S3/2). Second, emission from 2G9/2 is not observed at RT but appears at 10 K. Third, the red emission from 4F9/2 is much weaker at 10 K. Cross-relaxation quenches emission from multiplets 4D 5/2 and 4F5/2 in Cs2NaErCl 6 whereas emission from the former is clearly observed in dilute Cs2NaYCl6:Er3+. Detailed assignments are provided and the cross-relaxation processes are described. © 2011 Elsevier B.V. All rights reserved.

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