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.

中文翻译：

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稳定的 CsPbBr3-玻璃纳米复合材料，用于低光谱广色域激光驱动投影显示

最新的激光驱动投影技术对绿色荧光粉提出了迫切的需求，对其性能提出了严格的要求。在此，凭借基于CsPbBr _{3 -}玻璃纳米复合材料的新型架构设计，即在蓝宝石板上烧结的CsPbBr ₃玻璃陶瓷膜，这种著名的绿色荧光粉在激光驱动投影中的应用可行性得到了证明。单分散钙钛矿 CsPbBr ₃非晶玻璃基体中的纳米结构以及与低熔点玻璃共烧结过程中可忽略的热腐蚀确保了良好的发光性能。坚固的玻璃主体和带有高导热性的蓝宝石基板有助于良好地抵抗热冲击、潮湿和蓝色激光照射。结果表明，旋转“荧光轮”的脉冲激发减轻了热积累效应，从而提高了发光饱和阈值。构建的原型光源产生 ≈0.41 mm ²的低扩展率、128.4% NTSC（95.9% Rec. 2020）的宽色域和 174 lm 的中等光通量。目前的工作突出了前所未有的设计，使 CsPbBr ₃看似不可能的应用 成真。