1. YAG:Ce PiGF@Alumina‐Substrate in a Reflection Mode for High‐Brightness Laser‐Driven Projection Display.
- Author
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Yang, Zezhong, Zheng, Song, Pang, Tao, Liao, Shengxiang, Zhu, Jiwen, Lin, Jidong, Huang, Feng, Zheng, Yuanhui, and Chen, Daqin
- Subjects
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OPTICAL properties , *COMPOSITE structures , *HEAT sinks , *THERMAL conductivity , *LUMINOUS flux , *LED displays , *PROJECTORS , *LUMINANCE (Photometry) , *LASERS - Abstract
Laser‐driven projector puts forward urgent demand for light‐conversion materials to achieve high‐quality image display. Herein, a composite structure phosphor‐in‐glass film (PiGF) is fabricated via screen‐printing YAG:Ce and low‐melting glass on the alumina substrate. Benefited from well‐retained optical properties of YAG:Ce in amorphous glass and high thermal conductivity of substrate, PiGF can produce desirable luminous flux of 7169 lm and luminous efficiency of 192 lm W−1 at saturation threshold of 13.25 W mm−2. Furthermore, it is demonstrated that thermal management by using a cool fan with aluminum heat sink is essential to reduce heat aggregation and improve white‐light stability of PiGF‐based laser lighting source operated in a reflective mode. Accordingly, a PiGF‐converted laser projection system is successfully designed for the first time, showing more vivid and brighter display feature benefited from high laser‐driven luminance of LCD screen (2180 cd m−2). This work highlights the practical application of PiGF@alumina‐substrate composite as an efficient laser‐driven color converter in high‐brightness projection display. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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