@article{Wang2025, 
author = {Xinyuan Wang and Jingxiang Qu and Hongjin Zhang and Deyi Chen and Ben Tian and Yun Mou and Jianming Xu and Yang Peng},
title = {A reflective sapphire@PiGF@alumina color converter enabling ultrahigh luminescence laser-driven white lighting},
year = {2025},
journal = {Journal of Advanced Ceramics},
volume = {14},
number = {8},
pages = {9221124},
keywords = {high brightness, phosphor-in-glass film (PiGF), laser-driven white lighting, reflective sandwich converter, double-sided heat dissipation},
url = {https://www.sciopen.com/article/10.26599/JAC.2025.9221124},
doi = {10.26599/JAC.2025.9221124},
abstract = {High-brightness laser lighting faces grave challenges in the development of laser-driven color converters that simultaneously possess excellent optical performance and superior heat dissipation. Herein, a reflective sandwich color converter of phosphor-in-glass film with sapphire and alumina (sapphire@PiGF@alumina, abbreviated as S@PiGF@A) is designed and prepared via a thermocompression bonding method. Owing to the high thermal conductivity and double-sided heat dissipation channels of alumina and sapphire, the S@PiGF@A color converter can withstand high laser power density and produce ultrahigh luminescence. Consequently, the optimized S@PiGF@A converter yields white light with an ultrahigh luminous flux of 6749 lm at a laser power density saturation threshold of 47.70 W/mm2, which is 2.44 times that of traditional PiGF@alumina color converter (2522 lm@19.53 W/mm2). These findings provide valuable guidelines to design high-quality PiGF color converter for high-brightness laser-driven white lighting.}
}