中国物理B ›› 2019, Vol. 28 ›› Issue (8): 83301-083301.doi: 10.1088/1674-1056/28/8/083301

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇    下一篇

Synthesis and surface plasmon resonance of Au-ZnO Janus nanostructures

Jun Zhou(周俊), Jian-Shuo Zhang(张建烁), Guo-Yu Xian(冼国裕), Qi Qi(齐琦), Shang-Zhi Gu(顾尚志), Cheng-Min Shen(申承民), Zhao-Hua Cheng(成昭华), Sheng-Tai He(何声太), Hai-Tao Yang(杨海涛)   

  1. 1 School of Material Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China;
    2 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2019-05-29 修回日期:2019-06-11 出版日期:2019-08-05 发布日期:2019-08-05
  • 通讯作者: Sheng-Tai He, Hai-Tao Yang E-mail:sht-he@tjpu.edu.cn;htyang@iphy.ac.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11274370 and 51471185) and the National Key Research and Development Program of China (Grant Nos. 2016YFJC020013 and 2018FYA0305800).

Synthesis and surface plasmon resonance of Au-ZnO Janus nanostructures

Jun Zhou(周俊)1,2, Jian-Shuo Zhang(张建烁)2, Guo-Yu Xian(冼国裕)2, Qi Qi(齐琦)2, Shang-Zhi Gu(顾尚志)2, Cheng-Min Shen(申承民)2, Zhao-Hua Cheng(成昭华)2, Sheng-Tai He(何声太)1, Hai-Tao Yang(杨海涛)2   

  1. 1 School of Material Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China;
    2 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2019-05-29 Revised:2019-06-11 Online:2019-08-05 Published:2019-08-05
  • Contact: Sheng-Tai He, Hai-Tao Yang E-mail:sht-he@tjpu.edu.cn;htyang@iphy.ac.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11274370 and 51471185) and the National Key Research and Development Program of China (Grant Nos. 2016YFJC020013 and 2018FYA0305800).

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摘要：

Metal-semiconductor Janus nanostructures with asymmetry and directionality have recently aroused significant interest, both in fundamental light-matter interactions mechanism and in technological applications. Here we report the synthesis of different Au-ZnO Janus nanostructures via a facile one-pot colloid method. The growth mechanism is revealed by a series of designed synthesis experiments. The light absorption properties are determined by both the decrease of dipole oscillations of the free electrons and the plasmon-induced hot-electron transfer. Moreover, the finite-difference time-domain (FDTD) simulation method is used to elucidate the electric field distributions of these Janus nanostructures.

关键词: Au-ZnO, SERS, finite-difference time-domain, mechanism

Abstract:

Metal-semiconductor Janus nanostructures with asymmetry and directionality have recently aroused significant interest, both in fundamental light-matter interactions mechanism and in technological applications. Here we report the synthesis of different Au-ZnO Janus nanostructures via a facile one-pot colloid method. The growth mechanism is revealed by a series of designed synthesis experiments. The light absorption properties are determined by both the decrease of dipole oscillations of the free electrons and the plasmon-induced hot-electron transfer. Moreover, the finite-difference time-domain (FDTD) simulation method is used to elucidate the electric field distributions of these Janus nanostructures.

Key words: Au-ZnO, SERS, finite-difference time-domain, mechanism

中图分类号:  (Raman and Rayleigh spectra (including optical scattering) ?)

  • 33.20.Fb
47.54.Bd (Theoretical aspects) 47.54.Jk (Materials science applications) 52.38.-r (Laser-plasma interactions)