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Proceedings Paper

Optical absorption properties of Ag nanoparticles embedded in partially oxidized amorphous silicon matrices
Author(s): Lin Yang; Guanghai Li; Lide Zhang
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Paper Abstract

Nanocomposite films consisting of nanosized Ag particles embedded in partially oxidized amorphous Si matrices were prepared by the radio frequency magnetron co-sputtering method. Effects of the subsequent heat treatments at different temperatures ranging from 200 degree(s)C to 500 degree(s)C on the optical absorption properties of the films were investigated by spectrometry. The analysis shows that the blue shift of the plasmon resonance absorption peak position of Ag nanoparticles does not originate from the different oxidation degrees of Si matrices. A deviation from the (1/R) dependence of peak width on the particle size is probably due to the activity of the interface of the Ag nanoparticles and the Si matrix. The concept of a `surface resonance state' is introduced to discuss the blue shift of the peak position, the decrease of the peak intensity and the broadening of the peak width with decreasing size of the Ag particles together with `quantum size effect'.

Paper Details

Date Published: 29 November 2000
PDF: 4 pages
Proc. SPIE 4086, Fourth International Conference on Thin Film Physics and Applications, (29 November 2000); doi: 10.1117/12.408392
Show Author Affiliations
Lin Yang, Institute of Solid State Physics (China)
Guanghai Li, Institute of Solid State Physics (China)
Lide Zhang, Institute of Solid State Physics (China)


Published in SPIE Proceedings Vol. 4086:
Fourth International Conference on Thin Film Physics and Applications

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