Bicolor phosphor-in-glass film with highly reflective interface design for high-quality laser-driven white lighting

Zhang, Hongjin; Yu, Zikang; Zhao, Jiuzhou; Ding, Yongjie; Chen, Mingxiang; Liu, Xiaowei; Peng, Yang

doi:10.1016/j.ceramint.2024.05.385

Ceramics International

2024

DOI: 10.1016/j.ceramint.2024.05.385

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Bicolor phosphor-in-glass film with highly reflective interface design for high-quality laser-driven white lighting

Hongjin Zhang,

Zikang Yu,

Jiuzhou Zhao

et al.

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High Luminescence Saturation Y₃Al₅O₁₂: Ce³⁺‐Diamond Composite Color Converter for High‐Brightness Laser‐Driven White Lighting

Yu,

Li,

Zhao

et al. 2024

Laser & Photonics Reviews

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Phosphor‐converted laser lighting confronts enormous challenges in the development of color converters with high luminescence saturation owing to the thermal issues from laser irradiation and phosphor conversion. Herein, a high luminescence saturation Y3Al5O12: Ce3+‐diamond (YAG‐diamond) composite color converter by introducing diamond particles in phosphor‐in‐glass film (PiGF) coated on transparent sapphire substrate is proposed for high‐brightness laser‐driven white lighting. By optimizing the diamond content to 6 wt.%, the YAG‐diamond converter shows a thermal conductivity (TC) of 14.7 W·m−1·K−1 and displays higher luminescence intensity at 175 °C (1.15 times that at 25 °C). Under laser excitation, the YAG‐diamond converter achieves a luminous flux (LF) of 1990 lm at the laser power density (LPD) saturation threshold (ST) of 24.82 W·mm−2, which is far better than the PiGF@sapphire converter with a LF of 1364 lm@17.64 W·mm−2. The laser‐driven converter yields stable white laser light with a correlated color temperature (CCT) of 5714 K and a chromaticity coordinate of (0.3278, 0.3372) at the ST of 24.82 W·mm−2. Furthermore, the working temperature of the converter is decreased by 59 °C (26.6%) under LPD of 10.89 W·mm−2. These results indicate that the proposed YAG‐diamond composite converter displays excellent opto‐thermal performances, which may be a promising luminescence material in high‐brightness white laser lighting.

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High Luminescence Saturation Y₃Al₅O₁₂: Ce³⁺‐Diamond Composite Color Converter for High‐Brightness Laser‐Driven White Lighting

Yu,

Li,

Zhao

et al. 2024

Laser & Photonics Reviews

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Bicolor phosphor-in-glass film with highly reflective interface design for high-quality laser-driven white lighting

Cited by 1 publication

References 44 publications

High Luminescence Saturation Y₃Al₅O₁₂: Ce³⁺‐Diamond Composite Color Converter for High‐Brightness Laser‐Driven White Lighting

High Luminescence Saturation Y₃Al₅O₁₂: Ce³⁺‐Diamond Composite Color Converter for High‐Brightness Laser‐Driven White Lighting

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Bicolor phosphor-in-glass film with highly reflective interface design for high-quality laser-driven white lighting

Cited by 1 publication

References 44 publications

High Luminescence Saturation Y3Al5O12: Ce3+‐Diamond Composite Color Converter for High‐Brightness Laser‐Driven White Lighting

High Luminescence Saturation Y3Al5O12: Ce3+‐Diamond Composite Color Converter for High‐Brightness Laser‐Driven White Lighting

Contact Info

Product

Resources

About

High Luminescence Saturation Y₃Al₅O₁₂: Ce³⁺‐Diamond Composite Color Converter for High‐Brightness Laser‐Driven White Lighting

High Luminescence Saturation Y₃Al₅O₁₂: Ce³⁺‐Diamond Composite Color Converter for High‐Brightness Laser‐Driven White Lighting