Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 790, Issue -, Pages 744-749Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2019.03.220
Keywords
Phosphor glass film; Dual-sapphire; White laser diodes; Working temperature
Categories
Funding
- National Natural Science Foundation of China [51805196, 51775219]
- National Key Research and Development Program of China [2016YFB0400804]
- Basic Research Plan Program of Shenzhen City [JCYJ20160509100737182]
- Analytical and Testing Center of Huazhong University of Science and Technology
Ask authors/readers for more resources
Phosphor-in-glass (PiG) is considered as a stable and efficient color converter for high-power white lighting due to its high thermal stability, excellent mechanical strength, and facile preparation process. However, the low thermal conductivity of PiG hinders the heat dissipation of phosphor, which limits its application in high-brightness white laser diodes (LDs). In this work, we proposed a heat-conducting PiG with dual-sapphire plates for laser-driven white lighting. The PiG_sapphire was fabricated by screen-printing and sintering a phosphor glass film between the dual-sapphire plates. In order to avoid the film delamination, a low-melting borosilicate glass matrix with similar expansion coefficient of sapphire was prepared. The optical performances of PiG_sapphire based white LDs were adjusted by varying the thickness of phosphor glass film. Furthermore, the PiG_apphire exhibits low working temperature (<50 degrees C) at the up/down surfaces under various laser powers compared with the traditional PiG, which is attributed to the effective heat transfer channels of dual-sapphire plates. The PiG_sapphire maintains high emission intensity and stable luminescence at much higher laser power. The results demonstrate that the heat-conducting PiG_sapphire is a promising color converter for high-brightness laser-driven white lighting. (C) 2019 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available