中国物理B ›› 2025, Vol. 34 ›› Issue (8): 87803-087803.doi: 10.1088/1674-1056/add90b

所属专题： SPECIAL TOPIC — Artificial intelligence and smart materials innovation: From fundamentals to applications

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Enhanced photothermal performance of dielectric silicon attached with multiple plasmonic gold nanoparticles

Xiangyu Tong(佟翔宇)1, Ning Chen(陈宁)2, Xiaowen Chen(陈晓文)1, Bin Zhang(张斌)1,†, and Xiaohu Wu(吴小虎)3,‡   

  1. 1 College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, China;
    2 Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250100, China;
    3 Thermal Science Research Center, Shandong Institute of Advanced Technology, Jinan 250100, China
  • 收稿日期:2025-04-07 修回日期:2025-05-13 接受日期:2025-05-15 出版日期:2025-07-17 发布日期:2025-08-08
  • 通讯作者: Bin Zhang, Xiaohu Wu E-mail:zb-sh@163.com;wuxiaohu@pku.edu.cn
  • 基金资助:
    This work is supported by the National Natural Science Foundation of China (Grant No. 52106099) and the Taishan Scholars Program of Shandong.

Enhanced photothermal performance of dielectric silicon attached with multiple plasmonic gold nanoparticles

Xiangyu Tong(佟翔宇)1, Ning Chen(陈宁)2, Xiaowen Chen(陈晓文)1, Bin Zhang(张斌)1,†, and Xiaohu Wu(吴小虎)3,‡   

  1. 1 College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, China;
    2 Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250100, China;
    3 Thermal Science Research Center, Shandong Institute of Advanced Technology, Jinan 250100, China
  • Received:2025-04-07 Revised:2025-05-13 Accepted:2025-05-15 Online:2025-07-17 Published:2025-08-08
  • Contact: Bin Zhang, Xiaohu Wu E-mail:zb-sh@163.com;wuxiaohu@pku.edu.cn
  • Supported by:
    This work is supported by the National Natural Science Foundation of China (Grant No. 52106099) and the Taishan Scholars Program of Shandong.

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摘要： The photothermal properties of dielectric materials at the nanoscale have garnered significant attention, especially in fields such as optical heating, photothermal therapy, and solar utilization. However, although dielectric materials can concentrate and manipulate light at the nanoscale, they cannot provide sufficient photothermal efficiency in a direct absorption solar collector. Combining plasmonic metal nanoparticles with dielectric nanostructures enables the fabrication of hybrid nanomaterials with excellent photothermal performance. This study presents a novel approach involving uniformly adhering plasmonic gold nanoparticles onto dielectric silicon nanoparticles to enhance the absorption peak, leading to a substantial enhancement of photothermal conversion efficiency. The results demonstrate that the absorption peak of silicon-gold hybrid nanoparticles exceeds that of pure silicon nanoparticles, achieving a 38% increase in photothermal conversion efficiency within a 10 ppm aqueous solution under a 20 mm optical path. The coupling of localized surface plasmon resonance and quadrupole resonance effects enhances the electric field, causing a temperature rise in both the hybrid nanoparticles and the surrounding aqueous solution. Nanostructural modulation studies reveal that the photothermal efficiency of silicon-gold hybrid nanoparticles is positively correlated with gold nanoparticle size but negatively correlated with silicon nanoparticle size. Combining multiple plasmonic nanoparticles with dielectric materials can effectively enhance photothermal performance and hold great application potential in direct absorption solar collectors and solar thermal utilization.

关键词: silicon-gold hybrid nanoparticles, localized surface plasmon resonance, dielectric nanomaterial, solar utilization

Abstract: The photothermal properties of dielectric materials at the nanoscale have garnered significant attention, especially in fields such as optical heating, photothermal therapy, and solar utilization. However, although dielectric materials can concentrate and manipulate light at the nanoscale, they cannot provide sufficient photothermal efficiency in a direct absorption solar collector. Combining plasmonic metal nanoparticles with dielectric nanostructures enables the fabrication of hybrid nanomaterials with excellent photothermal performance. This study presents a novel approach involving uniformly adhering plasmonic gold nanoparticles onto dielectric silicon nanoparticles to enhance the absorption peak, leading to a substantial enhancement of photothermal conversion efficiency. The results demonstrate that the absorption peak of silicon-gold hybrid nanoparticles exceeds that of pure silicon nanoparticles, achieving a 38% increase in photothermal conversion efficiency within a 10 ppm aqueous solution under a 20 mm optical path. The coupling of localized surface plasmon resonance and quadrupole resonance effects enhances the electric field, causing a temperature rise in both the hybrid nanoparticles and the surrounding aqueous solution. Nanostructural modulation studies reveal that the photothermal efficiency of silicon-gold hybrid nanoparticles is positively correlated with gold nanoparticle size but negatively correlated with silicon nanoparticle size. Combining multiple plasmonic nanoparticles with dielectric materials can effectively enhance photothermal performance and hold great application potential in direct absorption solar collectors and solar thermal utilization.

Key words: silicon-gold hybrid nanoparticles, localized surface plasmon resonance, dielectric nanomaterial, solar utilization

中图分类号:  (Nanocrystals, nanoparticles, and nanoclusters)

  • 78.67.Bf
73.20.Mf (Collective excitations (including excitons, polarons, plasmons and other charge-density excitations)) 77.84.-s (Dielectric, piezoelectric, ferroelectric, and antiferroelectric materials) 88.40.-j (Solar energy)