MAS:Eu-YAG:Ce composite phosphor converters with excellent thermal performance and enhanced color rendering index for high-power white LDs

Zhou, Chunming; Chen, Hang; Cao, Yue; Li, Yanbin; Zhou, Tianyuan; Shi, Chaofan; Chen, Dongshun; Chen, Xu; Lin, Shenghui; Liu, Xuanchu; Kang, Jian; Shao, Cen; Strek, Wieslaw; Chen, Hao; Zhang, Le

doi:10.1016/j.ceramint.2024.04.332

Ceramics International

2024

DOI: 10.1016/j.ceramint.2024.04.332

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MAS:Eu-YAG:Ce composite phosphor converters with excellent thermal performance and enhanced color rendering index for high-power white LDs

Chunming Zhou,

Hang Chen,

Yue Cao

et al.

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Self‐reduction triggered color tuning of Eu³⁺‐doped aluminosilicate glass for solid‐state white illumination

Chen,

Zhou,

Chen

et al. 2024

J Am Ceram Soc.

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Rare earth‐doped transparent glass, boasting high transmittance and excellent luminescent properties, holds great potential in the field of all‐inorganic solid‐state white illumination. Currently reported single‐structure solid‐state white lighting usually has the problems of low color rendering index (CRI) and high correlated color temperature (CCT) due to the lacking of red light emission. In this work, a novel single‐structure MgO–Al2O3–SiO2–Eu2O3 (MAS: Eu) glass with color tuning was prepared by the simple glass melting process. Interestingly, the prepared Eu3+‐doped aluminosilicate glass possessed a unique capability to achieve color emission under different excitation wavelengths. The reason for this was attributed to the good self‐reduction capability of the MAS glass, which effectively reduced Eu3+ to Eu2+ under an air atmosphere. Meanwhile, only by regulating the Eu3+ doping concentration, the MAS glass also achieved a tunable emission from blue to white to red light under 380 nm excitation. The acquisition of white light was realized through the multispectral emission of blue–green light emitted by Eu2+ and orange–red light emitted by Eu3+. Remarkably, the single‐structure MAS glass doped with 8 wt.% Eu3+ successfully achieved high‐quality white light and high thermal stability, exhibiting a high CRI of 86, a low CCT of 2761 K, good chromaticity parameters of (0.407 and 0.3192), and the emission intensity at 423 K remains above 86.35% that of room temperature. Meanwhile, the doped Eu3+ exceeded 12 wt.%, without any observable concentration quenching. Moreover, the MAS: Eu glass showed a high transmittance of 90 and a moderate thermal conductivity of 1.45 W/mK (epoxy resin ∼0.17 W/mK). These results would dramatically inspire the development of high‐quality solid‐state white lighting applications.

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Self‐reduction triggered color tuning of Eu³⁺‐doped aluminosilicate glass for solid‐state white illumination

Chen,

Zhou,

Chen

et al. 2024

J Am Ceram Soc.

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MAS:Eu-YAG:Ce composite phosphor converters with excellent thermal performance and enhanced color rendering index for high-power white LDs

Cited by 1 publication

References 56 publications

Self‐reduction triggered color tuning of Eu³⁺‐doped aluminosilicate glass for solid‐state white illumination

Self‐reduction triggered color tuning of Eu³⁺‐doped aluminosilicate glass for solid‐state white illumination

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MAS:Eu-YAG:Ce composite phosphor converters with excellent thermal performance and enhanced color rendering index for high-power white LDs

Cited by 1 publication

References 56 publications

Self‐reduction triggered color tuning of Eu3+‐doped aluminosilicate glass for solid‐state white illumination

Self‐reduction triggered color tuning of Eu3+‐doped aluminosilicate glass for solid‐state white illumination

Contact Info

Product

Resources

About

Self‐reduction triggered color tuning of Eu³⁺‐doped aluminosilicate glass for solid‐state white illumination

Self‐reduction triggered color tuning of Eu³⁺‐doped aluminosilicate glass for solid‐state white illumination