Enhanced photoluminescence via plasmonic gold nanoparticles and improved stability of perovskite nanocrystals in macroporous (Polydimethylsiloxane) PDMS matrices

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Science Pub Date : 2025-10-09 DOI:10.1007/s10853-025-11595-x

Sema Karabel Ocal, Kevser Sahin Tiras, M. Serdar Önses, Evren Mutlugun

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Abstract

In this work, we report a simple and cost-effective method for improving both the environmental stability and photoluminescence quantum efficiency (PLQY) of perovskite nanocrystals (PNCs). Through their embedding in a specially designed macroporous polydimethylsiloxane (MPDMS) matrix and incorporation of plasmonic gold nanoparticles (Au NPs), remarkable improvements are achieved. The resulting MPDMS@PNC composites are seen to retain near-unity quantum efficiency even after 24-h immersion in water and are observed to retain over 85% of the original efficiency even at 75 °C, displaying excellent thermal stability. More interestingly, by incorporating Au NPs and subjecting the material to mechanical pressure, the lifetime of the PNCs gets further increased. This is due to the more intimate spatial arrangement of Au NPs in the porous matrix, enhancing localized surface plasmon resonance (LSPR) coupling and thereby enhancing the photoluminescence (PL) of the PNCs. In general, this approach offers a scalable and robust route to designing stable, high-performance perovskite-based materials for next-generation optoelectronic applications.

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等离子体金纳米粒子增强了大孔聚二甲基硅氧烷PDMS基质中钙钛矿纳米晶体的光致发光和稳定性

在这项工作中，我们报告了一种简单而经济的方法来提高钙钛矿纳米晶体（pnc）的环境稳定性和光致发光量子效率（PLQY）。通过将它们包埋在特殊设计的大孔聚二甲基硅氧烷（MPDMS）基质中，并掺入等离子体金纳米粒子（Au NPs），取得了显著的改善。所得到的MPDMS@PNC复合材料即使在水中浸泡24小时后也能保持接近统一的量子效率，并且即使在75°C时也能保持85%以上的原始效率，表现出优异的热稳定性。更有趣的是，通过加入Au NPs并使材料受到机械压力，pnc的寿命进一步增加。这是由于Au NPs在多孔基质中更紧密的空间排列，增强了局部表面等离子体共振（LSPR）耦合，从而增强了pnc的光致发光（PL）。总的来说，这种方法为设计稳定、高性能的钙钛矿基材料提供了一种可扩展和强大的途径，用于下一代光电应用。

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来源期刊

Journal of Materials Science 工程技术-材料科学：综合

CiteScore

7.90

自引率

4.40%

发文量

1297

审稿时长

2.4 months

期刊介绍： The Journal of Materials Science publishes reviews, full-length papers, and short Communications recording original research results on, or techniques for studying the relationship between structure, properties, and uses of materials. The subjects are seen from international and interdisciplinary perspectives covering areas including metals, ceramics, glasses, polymers, electrical materials, composite materials, fibers, nanostructured materials, nanocomposites, and biological and biomedical materials. The Journal of Materials Science is now firmly established as the leading source of primary communication for scientists investigating the structure and properties of all engineering materials.