Design of lithium disilicate glass-ceramic based highly thermally stable LuAG:Ce PiG green converter for dynamic laser illumination†

IF 8.3 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Materials & Interfaces Pub Date : 2024-09-19 DOI:10.1039/D4TC03186E

Yusai Xu, Qianxiong Wen, Xidong Wang, Cong Zhao, Enrou Mei, Meilin Fu, Tengfei Tian, Xiaojuan Liang, Wenxia Gao and Weidong Xiang

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Abstract

Phosphor-in-glass (PiG) is widely used in laser illumination because of its low-temperature sintering process and high luminous efficiency. The selection of the glass matrix is essential for achieving high stability in PiG and preserving the original properties of the phosphor particles within it. In this study, a novel lithium disilicate glass-ceramic (LDGC) was developed as a matrix material. A series of LDGC-LuAG PiGs were synthesized at low temperatures using a one-step sintering method. The precipitation of lithium disilicates (LDs) greatly enhanced the thermal stability of the material. The LDGC-LuAG PiG exhibits an impressive thermal conductivity of 3.5 W m⁻¹ K⁻¹, a luminous efficiency (LE) as high as 246 lm W⁻¹, and a maximal luminous flux (LF) of 1584 lm with a conversion efficiency (CE) reaching up to 69%. Furthermore, the LDGC-LuAG PiG color wheel was developed and encapsulated in a commercial dynamic laser illumination module. At 190 W of blue input power, a bright green light was produced with a surprising LF of 19 654 lm, which even exceeded the commercial silicone color wheel. This study is expected to create new prospects for high-power laser illumination.

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设计用于动态激光照明的基于二硅酸锂玻璃陶瓷的高热稳定 LuAG:Ce PiG 绿色转换器†。

玻璃中的荧光粉（PiG）因其低温烧结工艺和高发光效率而被广泛应用于激光照明领域。要实现 PiG 的高稳定性并保持其中荧光粉颗粒的原有特性，玻璃基体的选择至关重要。本研究开发了一种新型二硅酸锂玻璃陶瓷（LDGC）作为基体材料。采用一步烧结法在低温下合成了一系列 LDGC-LuAG PiG。二硅酸锂（LDs）的沉淀大大提高了材料的热稳定性。LDGC-LuAG PiG 的热导率高达 3.5 W m-1 K-1，发光效率 (LE) 高达 246 lm W-1，最大光通量 (LF) 为 1584 lm，转换效率 (CE) 高达 69%。此外，还开发了 LDGC-LuAG PiG 色轮，并将其封装在商用动态激光照明模块中。在 190 W 的蓝光输入功率下，产生了明亮的绿光，LF 达到惊人的 19 654 lm，甚至超过了商用硅胶色轮。这项研究有望开创高功率激光照明的新前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ACS Applied Materials & Interfaces 工程技术-材料科学：综合

CiteScore

16.00

自引率

6.30%

发文量

4978

审稿时长

1.8 months

期刊介绍： ACS Applied Materials & Interfaces is a leading interdisciplinary journal that brings together chemists, engineers, physicists, and biologists to explore the development and utilization of newly-discovered materials and interfacial processes for specific applications. Our journal has experienced remarkable growth since its establishment in 2009, both in terms of the number of articles published and the impact of the research showcased. We are proud to foster a truly global community, with the majority of published articles originating from outside the United States, reflecting the rapid growth of applied research worldwide.