Halide perovskite-polymer composite film for bright and stable light-emitting devices

IF 23.2 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Composites and Hybrid Materials Pub Date : 2025-03-20 DOI:10.1007/s42114-025-01294-1

Maoding Cheng, Brooke Robinson, Manoj Shah, Emad Omar Badradeen, Araceli Herrera Mondragon, Roberto Gonzalez Rodriguez, Jingbiao Cui, Yuankun Lin, Anupama B. Kaul, Fumiya Watanabe, Grant Wangila, Mansour Mortazavi, Chao Yan, Zhanhu Guo, Qinglong Jiang

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Abstract

Stability is the primary hindrance for the application of halide perovskite material in light-emitting devices, solar cells, and other devices. In this work, halide perovskite and polymer composite film have been prepared for stable and bright light-emitting devices. Pure-phase Cs₄PbBr₆ crystals have been synthesized, and their photoluminescence (PL) properties and fluorescence lifetimes have been investigated. The Cs₄PbBr₆ crystals exhibited high uniformity but underwent rapid photodegradation under light irradiation. To address this issue, we prepared bright light-emitting devices using composite of Cs₄PbBr₆ crystals and polyethylene oxide (PEO) as the emission layer. The aim was to improve the optical and physical properties of halide perovskites, such as photodegradation and stability. PEO, with its excellent film-forming ability, created a uniform and dense film on the halide perovskite surface, filling microscopic defects and providing a protective barrier. FTIR, morphology, and PL analyses confirmed the protective role of the halide perovskite and polymer composite film. The composite film light-emitting devices demonstrated improved stability and higher PL brightness, with a peak brightness approaching 3 × 10⁸ cd/m², which was approximately 75% higher than the pure halide perovskite devices.

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用于明亮稳定发光器件的卤化物过氧化物-聚合物复合薄膜

稳定性是制约卤化物钙钛矿材料在发光器件、太阳能电池和其他器件中应用的主要障碍。在这项工作中，卤化物钙钛矿和聚合物复合薄膜制备了稳定明亮的发光器件。合成了纯相Cs4PbBr6晶体，并对其光致发光（PL）性能和荧光寿命进行了研究。Cs4PbBr6晶体具有较高的均匀性，但在光照射下会发生快速光降解。为了解决这一问题，我们采用Cs4PbBr6晶体和聚乙烯氧化物（PEO）的复合材料作为发射层制备了明亮的发光器件。目的是改善卤化物钙钛矿的光学和物理性质，如光降解和稳定性。PEO以其优异的成膜能力，在卤化物钙钛矿表面形成均匀致密的薄膜，填充微观缺陷，提供保护屏障。FTIR，形貌和PL分析证实了卤化物钙钛矿和聚合物复合膜的保护作用。复合薄膜发光器件表现出更好的稳定性和更高的发光亮度，峰值亮度接近3 × 108 cd/m2，比纯卤化物钙钛矿器件高约75%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Advanced Composites and Hybrid Materials Multiple-

CiteScore

26.00

自引率

21.40%

发文量

185

期刊介绍： Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field. The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest. Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials. Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.