中国物理B ›› 2011, Vol. 20 ›› Issue (9): 97301-097301.doi: 10.1088/1674-1056/20/9/097301

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The edges and terrace effect of Ag particles on optical resonance absorption property

许小亮1, 赵亚丽2, 桂亚强2, 张振林2, 马富花2, 许晓丽2   

  1. (1)Structure Research Laboratory, University of Science and Technology of China, Hefei 230026, China; (2)The 33rd Institute of Branch, China Electronics and Technology Corporation, Taiyuan 030006, China
  • 收稿日期:2011-03-10 修回日期:2011-04-29 出版日期:2011-09-15 发布日期:2011-09-15

The edges and terrace effect of Ag particles on optical resonance absorption property

Zhao Ya-Li(赵亚丽)a)†, Gui Ya-Qiang(桂亚强)a), Zhang Zhen-Lin(张振林)a), Ma Fu-Hua(马富花)a), Xu Xiao-Li(许晓丽)a), and Xu Xiao-Liang(许小亮)b)   

  1. a The 33rd Institute of Branch, China Electronics and Technology Corporation, Taiyuan 030006, China; b Structure Research Laboratory, University of Science and Technology of China, Hefei 230026, China
  • Received:2011-03-10 Revised:2011-04-29 Online:2011-09-15 Published:2011-09-15

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摘要： Alternative Ag and SiO2 multilayers are prepared by using radio frequency magnetron sputtering. The Ag particles are found to diffuse toward and mostly accumulate near the surface of the Ag—SiO2 composite film via a rapid thermal treatment. Different shapes of the Ag particles are obtained by changing the thickness of each Ag and SiO2 layer. The response absorption property of the Ag composite film is also investigated. We relate the resonance absorption to the surface level and the Fermi level. To induce the obvious resonance absorption in an Ag composite film, it is necessary to maintain special shapes with sharp edges and wide terraces and to maintain the particle sizes ranging from 0 nm to 100 nm.

关键词: resonance absorption, edges and terrace, surface state, Fermi level

Abstract: Alternative Ag and SiO2 multilayers are prepared by using radio frequency magnetron sputtering. The Ag particles are found to diffuse toward and mostly accumulate near the surface of the Ag—SiO2 composite film via a rapid thermal treatment. Different shapes of the Ag particles are obtained by changing the thickness of each Ag and SiO2 layer. The response absorption property of the Ag composite film is also investigated. We relate the resonance absorption to the surface level and the Fermi level. To induce the obvious resonance absorption in an Ag composite film, it is necessary to maintain special shapes with sharp edges and wide terraces and to maintain the particle sizes ranging from 0 nm to 100 nm.

Key words: resonance absorption, edges and terrace, surface state, Fermi level

中图分类号:  (Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))

  • 73.20.Mf
78.67.Bf (Nanocrystals, nanoparticles, and nanoclusters)