A reflective sapphire@PiGF@alumina color converter enabling ultrahigh luminescence laser-driven white lighting
Year: 2025
Type: article
Abstract: High-brightness laser lighting faces grave challenges in developing laser-driven color converters with simultaneously possessing 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 by a thermocompression bonding method. Benefiting from 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 ultra-high 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 47.70W/mm2, which is 2.44 times that of traditional PiGF@alumina color converter (2522 [email protected] W/mm2). The findings provide valuable guidelines to design high quality PiGF color converter for high brightness laser-driven white lighting.
Source: Journal of Advanced Ceramics
Authors: Xinyuan Wang, Jingxiang Qu, Hongjin Zhang, Deyi Chen, Ben Tian, Yun Mou, Jianming Xu, Yang Peng
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,372
Award: G3540214910
OpenAlex ID: W4411763481