Industry-friendly synthesis and high saturation threshold of a LuAG:Ce/glass composite film realizing high-brightness laser lighting

Jian Xu, Yang Yang, Jian Wang, Baoli Du, Adrián A. Santamaría, Baofu Hu, Bingguo Liu, Haipeng Ji*, Carsten Dam-Hansen, Ole B. Jensen

*Corresponding author for this work

    Research output: Contribution to journalJournal articleResearchpeer-review

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    Abstract

    Phosphors that are designed for laser-lighting are essential to possess high luminescence saturation threshold. However, the current phosphors with adequate saturation threshold have been facing several technological limitations including costly, complex and tedious synthetic approaches. Herein, we report the facile fabrication of LuAG:Ce/glass composite films using an industry-friendly blade-coating method. The resultant composite film presents a porous architecture that can facilitate light extraction and confine the laser spots. When pumped by blue laser, the composite film shows a high internal quantum efficiency of 86% and the corresponding white light source shows a high luminous efficacy of 199 lm/W. Furthermore, the composite film shows no sign of saturation even under the irradiation of 30.1 W blue laser; therefore, a high luminous flux of 5496 lm can be achieved. The combination of these outstanding properties and the industry-friendly fabrication method can drive the development of commercially viable phosphors for high-power laser-lighting applications.

    Original languageEnglish
    JournalJournal of the European Ceramic Society
    Volume40
    Issue number15
    Pages (from-to)6031-6036
    ISSN0955-2219
    DOIs
    Publication statusPublished - Dec 2020

    Keywords

    • Blade coating
    • Composite film
    • High luminous flux
    • Laser lighting
    • LuAG:Ce

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