Ultra-Stable CsPbBr3@Y2O3 Translucent Ceramic with a Record-High Thermal Conductivity for Laser-Driven Applications

IF 18.5 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Advanced Functional Materials Pub Date : 2025-05-16 DOI:10.1002/adfm.202509643

Zesheng Pan, Sifan Zhuo, Zhiyu Qin, Yinghan Zhang, Weijie Li, Jiani Zhou, Zhe Liu, Jingshan Hou, Yongzheng Fang, Minghui Wang, Haijie Chen, Beiying Zhou, Daqin Chen, Lianjun Wang, Wan Jiang

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Abstract

Phosphor-in-ceramics (PiCs) have emerged as a promising approach to improve the thermal and moisture resistance of phosphors. For halide perovskites, the assembly of PiCs has been highly difficult because of their tendency to decompose even at low temperature (≈200 °C). In this work, a translucent CsPbBr₃@Y₂O₃ (CPB@Y₂O₃) quantum dots-in-ceramic (QiC) is fabricated that preserves the optoelectronic properties of CsPbBr₃ nanocrystals (NCs), demonstrates superb environmental stability, and exhibits a record-high thermal conductivity (8.7 W m⁻¹K⁻¹ at 25 °C). An in situ template-assisted reaction is employed to ensure a persistent confinement of CsPbBr₃ NCs throughout the sintering process. An oxygen-induced photoluminescent (PL) modulation is conducted to obtain highly emissive sintering precursor (SP). As a result, a prototype laser-driven projection system, using CPB@Y₂O₃ QiC-K₂SiF₆: Mn⁴⁺ (KSF) phosphorin-glass film (PiGF) as light source, achieved a high luminous flux of 225 lm and an ultra-wide color gamut of 174% compared to commercial LED projectors without the need of heat sinks. Moreover, the CPB@Y₂O₃ QiC is successfully applied for laser-driven visible light communication (VLC), realizing a high modulation bandwidth of 38.7 MHz and an ultrafast data transmission speed of 167 Mbps. Both applications represent the state-of-art device performance for the CsPbBr₃-based materials reported so far.

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超稳定CsPbBr3@Y2O3半透明陶瓷，具有激光驱动应用的创纪录的高导热性

陶瓷磷（PiCs）已成为一种有前途的方法，以提高荧光粉的耐热性和防潮性。对于卤化物钙钛矿来说，PiCs的组装非常困难，因为它们即使在低温（≈200°C）下也容易分解。在这项工作中，制造了一个半透明的CsPbBr3@Y2O3 （CPB@Y2O3）陶瓷量子点（QiC），它保留了CsPbBr3纳米晶体（NCs）的光电特性，表现出极好的环境稳定性，并表现出创纪录的高导热系数（25°C时8.7 W m−1K−1）。采用原位模板辅助反应来确保CsPbBr3 NCs在整个烧结过程中的持续约束。采用氧致光致发光（PL）调制获得高发射烧结前驱体（SP）。因此，与不需要散热片的商用LED投影仪相比，使用CPB@Y2O3 qi - k2sif6: Mn4+ (KSF)磷玻璃膜（PiGF）作为光源的原型激光驱动投影系统实现了225 lm的高光通量和174%的超宽色域。此外，CPB@Y2O3 QiC成功应用于激光驱动的可见光通信（VLC），实现了38.7 MHz的高调制带宽和167 Mbps的超快数据传输速度。这两种应用都代表了迄今为止报道的基于cspbbr3的材料的最先进的器件性能。

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来源期刊

Advanced Functional Materials 工程技术-材料科学：综合

CiteScore

29.50

自引率

4.20%

发文量

2086

审稿时长

2.1 months

期刊介绍： Firmly established as a top-tier materials science journal, Advanced Functional Materials reports breakthrough research in all aspects of materials science, including nanotechnology, chemistry, physics, and biology every week. Advanced Functional Materials is known for its rapid and fair peer review, quality content, and high impact, making it the first choice of the international materials science community.