Optical absorption properties of Ag nanoparticles embedded in partially oxidized amorphous silicon matrices

Lin Yang; Guanghai Li; Lide Zhang

doi:10.1117/12.408392

29 November 2000 Optical absorption properties of Ag nanoparticles embedded in partially oxidized amorphous silicon matrices

Lin Yang, Guanghai Li, Lide Zhang

Author Affiliations +

Proceedings Volume 4086, Fourth International Conference on Thin Film Physics and Applications; (2000) https://doi.org/10.1117/12.408392
Event: 4th International Conference on Thin Film Physics and Applications, 2000, Shanghai, China

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'.

Citation Download Citation

Lin Yang, Guanghai Li, and Lide Zhang "Optical absorption properties of Ag nanoparticles embedded in partially oxidized amorphous silicon matrices", Proc. SPIE 4086, Fourth International Conference on Thin Film Physics and Applications, (29 November 2000); https://doi.org/10.1117/12.408392

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