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Relation of thickness and luminescence in F-modified silicate based remote phosphor coating for white light emitting diodes

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Abstract

A remote phosphor coating by using Sr3(Al,Si)(O, F)5:Ce3+ (SASF:Ce3+) on glass substrate was prepared by a simple and convenient screen printing method. The crystalline phase and the distribution of SASF:Ce3+ crystals in coating were investigated by XRD and SEM, respectively. The scattering light and absorption light properties of remote phosphor coating with different thicknesses were discussed through Lambert–Beer’s law. The relationship between luminous efficiency and absorption coefficient was demonstrated. White light emitting diode prototype fabricated with blue chip and the prepared patterned SASF:Ce3+ remote phosphor in this work showed excellent performances, opening a cost-effective process to generate planar white light.

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Acknowledgments

We gratefully acknowledge the financial support by the National Natural Science Foundation of China (nos. 21076161, 50802062, 50872091 and 51102265) and Program of Discipline Leader of Colleges and Universities, Tianjin.

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Authors and Affiliations

  1. Institute of Materials Physics, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, 300384, People’s Republic of China

    Rui Li, Yan-ze Wang, Zhi-yong Mao & Da-Jian Wang

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  1. Rui Li
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  2. Yan-ze Wang
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  3. Zhi-yong Mao
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  4. Da-Jian Wang
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Correspondence to Zhi-yong Mao or Da-Jian Wang.

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Li, R., Wang, Yz., Mao, Zy. et al. Relation of thickness and luminescence in F-modified silicate based remote phosphor coating for white light emitting diodes. J Mater Sci: Mater Electron 26, 884–890 (2015). https://doi.org/10.1007/s10854-014-2478-x

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  • DOI: https://doi.org/10.1007/s10854-014-2478-x

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