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Efficient and Color-Tunable Oxyfluoride Solid Solution Phosphors for Solid-State White Lighting

Authors

  • Won Bin Im,

    1. Solid State Lighting and Energy Center and Materials Department, University of California Santa Barbara, Santa Barbara, CA 93106 USA
    2. School of Materials Science and Engineering, Chonnam National University, Gwangju 500-757, Republic of Korea
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  • Nathan George,

    1. Department of Chemical Engineering, University of California Santa Barbara, Santa Barbara, CA 93106 USA
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  • Joshua Kurzman,

    1. Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, CA 93106 USA
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  • Stuart Brinkley,

    1. Department of Electrical and Computer Engineering, University of California, Santa Barbara, Santa Barbara, CA 93106 USA
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  • Alexander Mikhailovsky,

    1. Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, CA 93106 USA
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  • Jerry Hu,

    1. Materials Research Laboratory, University of California Santa Barbara, Santa Barbara, CA 93106 USA
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  • Bradley F. Chmelka,

    Corresponding author
    1. Department of Chemical Engineering, University of California Santa Barbara, Santa Barbara, CA 93106 USA
    • Department of Chemical Engineering, University of California Santa Barbara, Santa Barbara, CA 93106 USA.
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  • Steven P. DenBaars,

    Corresponding author
    1. Solid State Lighting and Energy Center and Materials Department, University of California Santa Barbara, Santa Barbara, CA 93106 USA
    • Solid State Lighting and Energy Center and Materials Department, University of California Santa Barbara, Santa Barbara, CA 93106 USA.
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  • Ram Seshadri

    1. Solid State Lighting and Energy Center and Materials Department, University of California Santa Barbara, Santa Barbara, CA 93106 USA
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Abstract

original image

A solid solution strategy helps increase the efficiency of Ce3+ oxyfluoride phosphors for solid-state white lighting. The use of a phosphor-capping architecture provides additional light extraction. The accompanying image displays electroluminescence spectra from a 434-nm InGaN LED phosphor that has been capped with the oxyfluoride phosphor.

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