Au/nc-Si:H core-shell Nanostructures prepared by hot wire assisted plasma enhanced chemical vapor deposition technique

Wah, C.K. and Tong, Goh Boon and Abdul, Rahman Saadah and Zarina, Aspanut (2012) Au/nc-Si:H core-shell Nanostructures prepared by hot wire assisted plasma enhanced chemical vapor deposition technique. Surface and Coatings Technology. ISSN 0257-8972

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Abstract

In this study, Au film was embedded in Si:H film on quartz substrate with and without an SiOx layer by using the hot wire assisted plasma enhanced chemical vapor deposition (HW-PECVD) technique. The as-prepared Au/Si:H films were post-thermally annealed at 800 °C in nitrogen ambient in order to initiate the growth of Au NPs. The annealed Au/a-Si:H film deposited on quartz substrate without an SiOx layer showed the formation of well-distributed and spherical Au NPs. Formations of Au/nc-Si:H core shell nanostructures were observed on annealed film deposited on quartz substrate with an SiOx layer. XRD and micro-Raman scattering spectra revealed that the degree of crystallinity of nc-Si:H was dependent on the annealing temperature and interaction between a-Si:H film and SiOx layer. Optical spectra showed that the Au NPs on annealed films deposited on quartz substrate without an SiOx layer exhibited prominent SPR peak while annealed Au/nc-Si:H core shell nanostructures showed increased reflectance of light in the visible region.

Item Type: Article
Uncontrolled Keywords: Au/nc-Si:H core shell nanostructures Silicon suboxide HW-PECVD
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Dept of Physics
Depositing User: miss munirah saadom
Date Deposited: 15 Jul 2013 03:43
Last Modified: 12 Dec 2014 01:19
URI: http://eprints.um.edu.my/id/eprint/7319

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