钯纳米颗粒超晶格薄膜光学特性  

Optical Properties of Palladium Nanoparticle Superlattice Thin Films

作　　者：史作盐 黄信 王芳[2] 虞应 刘绍鼎 Shi Zuoyan;Huang Xin;Wang Fang;Yu Ying;Liu Shaoding(Key Laboratory of Advanced Transducers and Intelligent Control System of Ministry of Education,Taiyuan University of Technology,Taiyuan 030024,Shanxi,China;College of Electronic Information and Optical Engineering,Taiyuan University of Technology,Taiyuan 030024,Shanxi,China)

机构地区：[1]太原理工大学新型传感器与智能控制教育部重点实验室,山西太原030024 [2]太原理工大学电子信息与光学工程学院,山西太原030024

出　　处：《激光与光电子学进展》2025年第1期358-364,共7页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(11804408);山西省基础研究计划项目(202203021221080)。

摘　　要：钯纳米颗粒具有大比表面积、高催化效率,以及良好的电化学性能,在光催化和传感等领域展现出广泛的应用前景。其中,如何增强纳米颗粒与光场的相互作用是提高光学器件性能的关键。通过自组装方法制备钯纳米颗粒超晶格薄膜,基于超晶格极化激元模式的激发增强有效提升了钯纳米颗粒超晶格结构对入射光场能量的聚焦。实验及计算得到的透/反射光谱表明,所制备的钯纳米颗粒超晶格能够有效激发极化激元模式,同阶极化激元模式随超晶格薄膜层数的增加红移,同时产生高阶极化激元模式。更重要的是,这种超晶格结构能够在纳米颗粒之间间隔处形成增强的局域场,与离散钯纳米颗粒相比其局域场增强因子获得了约1倍的提升,实现了对入射场能量的有效聚焦。这一研究为设计高性能光催化和光传感器件提供了较好的参考价值。Palladium nanoparticles boast large specific surface area,high catalytic efficiency,and excellent electrochemical performance,making them highly promising for applications in photocatalysis and light sensing.Improving the interaction among these nanoparticles and the light field is crucial for enhancing optical device performance.In this study,palladium nanoparticle superlattice thin films were prepared using a self-assembly method.The superlattice polariton mode,which is based on excitation enhancement,significantly improved the concentration of light field energy on the palladium nanoparticle structure.Both experimental and calculated transmittance/reflectance spectra indicated that the as-prepared palladium nanoparticle superlattice effectively excites polariton modes.As the number of superlattice film layers increases,the same order polariton modes experience a redshift,while higher-order polariton modes are generated.Notably,this superlattice structure creates enhanced local fields at the intervals between nanoparticles.Compared to discrete palladium nanoparticles,the local field enhancement factor of the superlattice structure is approximately doubled,achieving more effective focusing of incident field energy.This study offers valuable insights for designing highperformance photocatalytic and light sensing devices.

关 键 词：钯纳米颗粒 超晶格 极化激元 自组装 

分 类 号：O437[机械工程—光学工程]