Enhancing Non-linear Response of Fullerene via Incorporation of Gold Nanoparticles

Bi-functional nanocomposite thin films of fullerene C 60 and C 70 containing Au NPs were synthesized using thermal co-evaporation method. Different atomic concentrations of Au metal varying from 5 to 35 at.% was chosen to get the Au NPs with different sizes in fullerene matrix. The thickness of film...

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Bibliographic Details
Published in:Plasmonics (Norwell, Mass.) Mass.), 2020-04, Vol.15 (2), p.361-370
Main Authors: Vishnoi, Ritu, Gupta, Satakshi, Bhardwaj, Jyotsna, Singhal, Rahul
Format: Article
Language:English
Subjects:
Backscattering
Biochemistry
Biological and Medical Physics
Biophysics
Biotechnology
Buckminsterfullerene
Chemistry
Chemistry and Materials Science
Excitation spectra
Fullerenes
Gold
Nanocomposites
Nanoparticles
Nanotechnology
Nonlinear response
Raman spectra
Rutherford backscattering spectroscopy
Spectrum analysis
Thickness
Thin films
Visible spectrum
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Summary:Bi-functional nanocomposite thin films of fullerene C 60 and C 70 containing Au NPs were synthesized using thermal co-evaporation method. Different atomic concentrations of Au metal varying from 5 to 35 at.% was chosen to get the Au NPs with different sizes in fullerene matrix. The thickness of films and metal concentration is confirmed by Rutherford backscattering spectroscopy (RBS). UV-visible spectrum shows the excitation of SPR band in all samples except for the lowest metal concentration which is ~ 5 at.% and SPR is red shifted with increasing concentration of Au. The shift in SPR position with increasing metal concentration for both Au-C 60 and Au-C 70 is nearly linear. X-ray diffraction spectroscopy indicates the formation of bigger size particles with increasing metal concentration in both the cases of Au-C 60 and Au-C 70 , which is further confirmed by transmission electron microscopy results. Au-C 60 and Au-C 70 (could) be interesting nanocomposites for surface-enhanced Raman scattering studies.
ISSN:1557-1955
1557-1963
DOI:10.1007/s11468-019-01042-4