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Luminescence saturation studies of YAG: Ce phosphor ceramics for white laser diode lighting

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Abstract

As a new generation of solid-state lighting devices, phosphor-converted white laser diodes are required to be able to reach high-power. For white laser diode lighting, high-power laser excitation is necessary to obtain high luminous flux. Here, the change of luminous flux of YAG: Ce phosphor ceramics excited by the high-power blue laser is systematically investigated by regulating the blue laser power, irradiation distance, and irradiation time. The results indicate that the luminous flux is basically unchanged when the change in the irradiation distance is less than 10 cm. Moreover, when the blue laser power changes from 3.01 to 19.21 W, the luminous flux is increased by 285%. The saturation thresholds of YAG: Ce phosphor ceramics exceed 27 W. The results show that the collimated laser beam excision can significantly reduce the effect of spot area on the luminous flux, and significantly enhance the saturation laser power of the YAG: Ce phosphor ceramics.

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Data availability

Data will be made available on request. No datasets were generated or analysed during the current study.

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Funding

This work was financially supported from the National Key Research and Development Program of China (Grant No. 2021YFB3501700), Shanghai Science and Technology Committee (STCSM) Science and Technology Innovation Program (Grant Nos. 22N21900400, 23N21900100), National Natural Science Foundation of China (Grant No. 12104311), Science and Technology Talent Development Fund for Young and Middle-aged Teachers of Shanghai Institute of Technology (Grant No. ZQ2022-3), Shanghai Chenguang Program (Grant No. 22CGA74).

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Authors and Affiliations

  1. School of Material Science and Engineering, Shanghai Institute of Technology, Shanghai, 201418, China

    Xindi Li, Yang Li & Lichao Wang

  2. Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronics Engineering, Jiangsu Normal University, Xuzhou, 221116, China

    Jian Kang

  3. Jiangsu Xiyi Advanced Materials Research Institute of Industrial Technology, Xuzhou, 221400, China

    Jian Kang

  4. School of Science, Shanghai Institute of Technology, Shanghai, 201418, China

    Jun Zou

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  1. Xindi Li
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  2. Yang Li
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  3. Lichao Wang
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Contributions

All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by XL, YL, LW, JK and JZ. The first draft of the manuscript was written by XL and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Yang Li.

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Li, X., Li, Y., Wang, L. et al. Luminescence saturation studies of YAG: Ce phosphor ceramics for white laser diode lighting. J Mater Sci: Mater Electron 35, 299 (2024). https://doi.org/10.1007/s10854-024-12059-9

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