Singhal, Rahul and Vishnoi, Ritu and Sharma, Pooja and Sharma, G. D. and Chand, S. and Kanjilal, D. and Pivin, J. C. (2017) Synthesis, characterization and thermally induced structural transformation of Au-C-70 nanocomposite thin films. Vacuum, 142. pp. 146-153. ISSN 0042-207X

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Abstract

Au-C-70 nanocomposite thin films are deposited using thermal co-evaporation technique. LoW atomic concentration of Au (-3%) are used to avoid any deterioration of the properties of fullerene C-70 when used with Au. These thin films are annealed in inert atmosphere at different temperatures for 30 min in order to promote the formation of nanocomposite material. Both the Au nanoparticles and fullerene C70 matrix are evolved by thermal treatment. Spherical shaped Au nanoparticles with a diameter of 3.8 +/- 0.1 nm are clearly observed in the TEM images at 350 degrees C. The characteristic D and G bands of amorphous carbon are evidenced by Raman scattering spectroscopy in the film annealed at 350 degrees C. The surface plasmon resonance (SPR) absorption band of Au nanoparticles in carbon is obtained at 565 nm after treatment at 300 degrees C and it is blue shifted to 549 nm for the sample annealed at 350 degrees C.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/S Elsevier.
Subjects:	Materials Science Applied Physics/Condensed Matter
Divisions:	UNSPECIFIED
Depositing User:	Users 27 not found.
Date Deposited:	08 May 2019 08:24
Last Modified:	08 May 2019 08:24
URI:	http://npl.csircentral.net/id/eprint/2903

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