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- Title
Stable CsPbBr<sub>3</sub>‐Glass Nanocomposite for Low‐Étendue Wide‐Color‐Gamut Laser‐Driven Projection Display.
- Authors
Lin, Shisheng; Lin, Hang; Chen, Guoxin; Wang, Bo; Yue, Xiangming; Huang, Qiugui; Xu, Ju; Cheng, Yao; Wang, Yuansheng
- Abstract
Up‐to‐date laser‐driven projection technology puts an urgent demand for green phosphor with stringent requirements on its performance. Herein, by virtue of a new architecture design based on CsPbBr3‐glass nanocomposite, i.e., CsPbBr3 glass ceramic film sintered on sapphire plate, the application availability of this famous green‐emitting phosphor is demonstrated in laser‐driven projection. The mono‐dispersed perovskite CsPbBr3 nanostructure in amorphous glass matrix and the negligible thermal corrosion during co‐sintering with low‐melting‐glass ensure good luminescent properties. The robust glass host and the carried sapphire substrate with high thermal conductivity contribute to good resistances to thermal shock, moisture, and blue laser irradiation. It is revealed that the thermal accumulation effect is relieved due to the pulsed excitation of rotatory "phosphor wheel," and so the luminescence saturation threshold gets increased. The constructed prototype lighting source yields a low étendue of ≈0.41 mm2, a wide color gamut of 128.4% NTSC (95.9% Rec. 2020), and a moderate luminous flux of 174 lm. The present work highlights an unprecedented design that makes the seemingly impossible application of CsPbBr3 come true.
- Subjects
PHOSPHORS; THERMAL shock; BLUE lasers; SAPPHIRES; LUMINOUS flux; NANOCOMPOSITE materials; LIGHT sources; LUMINESCENCE
- Publication
Laser & Photonics Reviews, 2021, Vol 15, Issue 7, p1
- ISSN
1863-8880
- Publication type
Article
- DOI
10.1002/lpor.202100044