Version 1
: Received: 5 July 2024 / Approved: 9 July 2024 / Online: 9 July 2024 (08:42:12 CEST)
How to cite:
Huang, H.-W.; Huang, C.-W.; Chen, Y.-C.; Shih, H.-K.; Cheng, W.-C.; Liu, C.-N.; Chiang, C.-C. A Novel Five-Surface Phosphor-in-Glass for High Illumination and Excellent Color Uniformity in Larger Scale LEDs. Preprints2024, 2024070717. https://doi.org/10.20944/preprints202407.0717.v1
Huang, H.-W.; Huang, C.-W.; Chen, Y.-C.; Shih, H.-K.; Cheng, W.-C.; Liu, C.-N.; Chiang, C.-C. A Novel Five-Surface Phosphor-in-Glass for High Illumination and Excellent Color Uniformity in Larger Scale LEDs. Preprints 2024, 2024070717. https://doi.org/10.20944/preprints202407.0717.v1
Huang, H.-W.; Huang, C.-W.; Chen, Y.-C.; Shih, H.-K.; Cheng, W.-C.; Liu, C.-N.; Chiang, C.-C. A Novel Five-Surface Phosphor-in-Glass for High Illumination and Excellent Color Uniformity in Larger Scale LEDs. Preprints2024, 2024070717. https://doi.org/10.20944/preprints202407.0717.v1
APA Style
Huang, H. W., Huang, C. W., Chen, Y. C., Shih, H. K., Cheng, W. C., Liu, C. N., & Chiang, C. C. (2024). A Novel Five-Surface Phosphor-in-Glass for High Illumination and Excellent Color Uniformity in Larger Scale LEDs. Preprints. https://doi.org/10.20944/preprints202407.0717.v1
Chicago/Turabian Style
Huang, H., Chun-Nien Liu and Chia-Chin Chiang. 2024 "A Novel Five-Surface Phosphor-in-Glass for High Illumination and Excellent Color Uniformity in Larger Scale LEDs" Preprints. https://doi.org/10.20944/preprints202407.0717.v1
Abstract
A novel five-surface phosphor-in-glass (FS-PiG) for high illumination and excellent color uniformity in larger-scale LEDs for sensor light source application is demonstrated. YAG phosphor (Y3Al5O12:Ce3+) was uniformly mixed with ceramic and sintered at 680°C to form a phosphor wafer. A sophisticated laser engraving was employed on the phosphor wafer to form a saddle-shaped large-scale FS-PiG LEDs. The performance of the FS-PiG LEDs exhibited the illumination of 401lm, average color temperature (CCT) of 5488K±110K, and color coordinates (CIE) of (0.3179±0.003, 0.3352±0.003). In contrast to convention single-surface phosphor-in-glass (SS-PiG) LEDs, the performance exhibited the illumination of 380lm, average CCT of 5830K±758K, and CIE of (0.3083±0.07, 0.3172±0.07). These indicated that the performance of the FS-PiG LEDs was higher than the SS-PiG LEDs for illumination, CCT, and CIE of 1.7, 7, and 23 times, respectively. Furthermore, the FS-PiG LEDs demonstrate lower lumen loss of 2% and less chromaticity shift of 5.4x10-3 under accelerated aging at 350°C for 1008 hours, owing to the high ceramic melting temperature of up to 510°C. In this study, the proposed FS-PiG larger-scale LEDs having excellent optical performance and high reliability may be the promising candidates to replace the convention phosphor-in-organic silicone material used in high-power LEDs for the next generation of sensor light sources, display, and headlight applications.
Engineering, Electrical and Electronic Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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