Micro-powder Ca3Sc2Si3O12:Ce silicate garnets as efficient light converters for WLEDs

Levchuk I, Osvet A, Brabec C, Batentschuk M, Shakhno A, Zorenko T, Zorenko Y (2020)


Publication Type: Journal article

Publication year: 2020

Journal

Book Volume: 107

Article Number: 109978

DOI: 10.1016/j.optmat.2020.109978

Abstract

A novel synthesis method of Ca3Sc2Si3O12:Ce micropowder with very bright photo-luminescence (PL) has been developed. The conventional solid-state reaction has been modified for Ca3Sc2Si3O12:Ce microparticle crystallization. Pre-synthesis of metal and silicon oxide blends with subsequent high-temperature treatment in reducing (H2/N2) atmosphere enables obtaining Ca3Sc2Si3O12:Ce micropowder with a high PL quantum yield of about 60–70% at Ce3+ content in the 2.5–5 at.% range, which is highly attractive for LED technology. Additionally, the Ca3Sc2Si3O12:Ce phosphors with Ce concentration in the 0.5–2.5% range display higher thermal stability of photoluminescence in comparison with a commercial YAG:Ce phosphor.

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APA:

Levchuk, I., Osvet, A., Brabec, C., Batentschuk, M., Shakhno, A., Zorenko, T., & Zorenko, Y. (2020). Micro-powder Ca3Sc2Si3O12:Ce silicate garnets as efficient light converters for WLEDs. Optical Materials, 107. https://dx.doi.org/10.1016/j.optmat.2020.109978

MLA:

Levchuk, Ievgen, et al. "Micro-powder Ca3Sc2Si3O12:Ce silicate garnets as efficient light converters for WLEDs." Optical Materials 107 (2020).

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