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Light emitting properties of SiAlON:Eu2+ green phosphor

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Abstract

SiAlON:Eu2+ green phosphor was successfully synthesized by solid-state synthesis for application to white-LED. The phase development, microstructure, photoluminescence and thermal quenching properties were investigated in detail. The prepared SiAlON:Eu2+ green phosphor had a rod-like morphology with a uniform particle distribution in length. The SiAlON:Eu2+ green phosphor absorbed a broad UV–Vis spectral region and showed a single intense broadband emission near 540 nm. The prepared SiAlON:Eu2+ green phosphor showed superior thermal quenching properties compared to silicate green phosphor. The light emitting properties of white-LED prepared by SiAlON:Eu2+ as green phosphor was investigated. The white-LED using the prepared SiAlON:Eu2+ green phosphor exhibited good optical stability in high driving currents compared to silicate phosphor.

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Authors and Affiliations

  1. Department of Environmental Engineering, Chonnam National Univeristy, 77 Yongbong-ro, Gwangju, 500-757, South Korea

    Do-Hwan Kim & Sung-Yong Cho

  2. The Korean Association of Crystal Growth Inc. Sungdong Post Office, P.O. Box 27, Seoul, 133-600, South Korea

    Jeong Ho Ryu

Authors
  1. Do-Hwan Kim
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  2. Jeong Ho Ryu
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  3. Sung-Yong Cho
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Correspondence to Jeong Ho Ryu.

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Kim, DH., Ryu, J.H. & Cho, SY. Light emitting properties of SiAlON:Eu2+ green phosphor. Appl. Phys. A 102, 79–83 (2011). https://doi.org/10.1007/s00339-010-6126-x

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  • DOI: https://doi.org/10.1007/s00339-010-6126-x

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