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

doi:10.1088/1674-1056/20/9/097301

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.

Keywords: resonance absorption edges and terrace surface state Fermi level

Received: 10 March 2011
Revised: 29 April 2011
Accepted manuscript online:

PACS:	73.20.Mf	(Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))
	78.67.Bf	(Nanocrystals, nanoparticles, and nanoclusters)

Cite this article:

Zhao Ya-Li(赵亚丽), Gui Ya-Qiang(桂亚强), Zhang Zhen-Lin(张振林), Ma Fu-Hua(马富花), Xu Xiao-Li(许晓丽), and Xu Xiao-Liang(许小亮) The edges and terrace effect of Ag particles on optical resonance absorption property 2011 Chin. Phys. B 20 097301

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

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