Studies on the Impact of the Core-Shell Structures on the Optical Characteristics of Au@Cu2O Nanoparticles

IF 2.5 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Electronic Materials Pub Date : 2026-01-25 DOI:10.1007/s11664-026-12690-8

Son Dinh Cao, Doanh Cong Sai, An Bang Ngac, I. S. Mahmoud, Mahmoud Ahmad, Hanh Hong Mai

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Abstract

Nanoparticles (NPs) with metal@dielectric core@shell, nano-sized dimensions, and local surface plasmon resonance peaks (LSPR) have to play a vital role owing to their optical interaction and comprehensive array of applications in several fields, including information transmission, biomedicine, and other advanced technologies. This work examines the optical characteristics of core/shell nanoparticle structures that can be regulated via aggregation. These structures have Au nanoparticles (NP) measuring 16.6 nm in diameter, while the shell thickness ranges from \(24.6 \pm 3.6\) to \(9.0 \pm 1.7\) nm. The absorption spectra of the Au core-Cu₂O shell nanoparticles were analyzed using the boundary element method (BEM). The absorption cross-sections over various wavelengths of light were determined by solving the Maxwell equations. Both Ox- and Oz-axis polarizations of an incident plane wave are used to determine the core-shell Au@Cu₂O nanoparticles’ field enhancement. Factors such as the core-shell ratio, the particle’s morphologies, and the spacing between the particles are taken into consideration to evaluate how particle structures influence their optical properties. The particle system’s distribution and organization were also considered, along with an analysis of the impact of the particle arrangement and distribution within the particle system. The similarity between the calculation and experimental results underscores the accuracy of our simulation model.

Graphical Abstract

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核壳结构对Au@Cu2O纳米粒子光学特性影响的研究

纳米粒子（NPs）具有metal@dielectric core@shell、纳米尺寸和局部表面等离子体共振峰（LSPR），由于其光相互作用和在包括信息传输、生物医学和其他先进技术在内的多个领域的广泛应用，它必须发挥至关重要的作用。这项工作考察了核/壳纳米颗粒结构的光学特性，可以通过聚集调节。这些结构的金纳米粒子（NP）直径为16.6 nm，壳层厚度为\(24.6 \pm 3.6\) ～ \(9.0 \pm 1.7\) nm。利用边界元法（BEM）分析了Au核- cu2o壳纳米粒子的吸收光谱。通过求解麦克斯韦方程确定了不同波长光的吸收截面。利用入射平面波的Ox轴和oz轴极化来确定核壳Au@Cu2O纳米粒子的场增强。考虑了核壳比、粒子形态和粒子间距等因素，以评估粒子结构如何影响其光学性质。还考虑了粒子系统的分布和组织，并分析了粒子系统内粒子排列和分布的影响。计算结果与实验结果的相似性进一步证明了仿真模型的准确性。图形摘要

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

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

CiteScore

4.10

自引率

4.80%

发文量

693

审稿时长

3.8 months

期刊介绍： The Journal of Electronic Materials (JEM) reports monthly on the science and technology of electronic materials, while examining new applications for semiconductors, magnetic alloys, dielectrics, nanoscale materials, and photonic materials. The journal welcomes articles on methods for preparing and evaluating the chemical, physical, electronic, and optical properties of these materials. Specific areas of interest are materials for state-of-the-art transistors, nanotechnology, electronic packaging, detectors, emitters, metallization, superconductivity, and energy applications. Review papers on current topics enable individuals in the field of electronics to keep abreast of activities in areas peripheral to their own. JEM also selects papers from conferences such as the Electronic Materials Conference, the U.S. Workshop on the Physics and Chemistry of II-VI Materials, and the International Conference on Thermoelectrics. It benefits both specialists and non-specialists in the electronic materials field. A journal of The Minerals, Metals & Materials Society.