Zezhong Yang, Song Zheng, Guoyu Xi, Tao Pang, Shaoxiong Wang, Qingying Ye, Bin Zhuang, Daqin Chen
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Patterned phosphor-in-glass films with efficient thermal management for high-power laser projection display
Recently, high-performance color converters excitable by blue laser diode (LD) have been sprung up for projection display. However, thermal accumulation effect of color converters is a non-negligible problem under high-power LD irradiation. Herein, we developed a novel opto-functional composite (patterned CaAlSiN3: Eu2+ phosphor-in-glass film-Y3Al5O12: Ce3+ phosphor-in-glass film@Al2O3 plate with aluminum “heat sink”) via a thermal management methodology of combining “phosphor wheel” and “heat sink” for the lighting source of high-power laser projection display. This new composite design makes it effective to transport the generated thermal phonons away to reduce thermal ionization process, and to yield stable and high-quality white light with brightness of 4510 lm @ 43 W, luminous efficacy of 105 lm/W, correlated color temperature of 3541 K, and color rendering index of 80.0. Furthermore, the phosphor-in-glass film-converted laser projection system was also successfully designed, showing more vivid color effect than traditional LED-based projector. This work emphasizes the importance of thermal management upon high power laser irradiation, and hopefully facilitates the development of new LD-driven lighting source for high-power laser projection display.
期刊介绍:
Journal of Advanced Ceramics is a single-blind peer-reviewed, open access international journal published on behalf of the State Key Laboratory of New Ceramics and Fine Processing (Tsinghua University, China) and the Advanced Ceramics Division of the Chinese Ceramic Society.
Journal of Advanced Ceramics provides a forum for publishing original research papers, rapid communications, and commissioned reviews relating to advanced ceramic materials in the forms of particulates, dense or porous bodies, thin/thick films or coatings and laminated, graded and composite structures.