Large Tuning of Surface Plasmon Resonance of Au–Fullerene Nanocomposite

Gold–fullerene C 60 nanocomposite thin films prepared by thermal co-deposition were irradiated by a high energy beam of 120 MeV Ag ions using Pelletron accelerator. Absorption spectra revealed a large and progressive tuning of surface plasmon resonance wavelength when the films were irradiated at hi...

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Bibliographic Details
Published in:Electronic materials letters 2019, 15(1), , pp.111-118
Main Authors: Vishnoi, Ritu, Gupta, Satakshi, Sharma, Ganesh D., Singhal, Rahul
Format: Article
Language:English
Subjects:
Absorption spectra
Blue shift
Buckminsterfullerene
Characterization and Evaluation of Materials
Chemistry and Materials Science
Condensed Matter Physics
Fullerenes
Gold
Ion bombardment
Ion irradiation
Materials Science
Nanocomposites
Nanoparticles
Nanotechnology
Nanotechnology and Microengineering
Optical and Electronic Materials
Original Article – Nanomaterials
Raman spectra
Refractivity
Surface plasmon resonance
Thin films
Tuning
전자/정보통신공학
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Summary:Gold–fullerene C 60 nanocomposite thin films prepared by thermal co-deposition were irradiated by a high energy beam of 120 MeV Ag ions using Pelletron accelerator. Absorption spectra revealed a large and progressive tuning of surface plasmon resonance wavelength when the films were irradiated at higher fluences. This blue shift (~ 119 nm) can be ascribed to the evolution of fullerene into amorphous carbon upon bombardment of high energy ions at higher fluences and causes a shift in refractive index of the matrix. Raman spectra ascertained this transformation with the presence of two bands: D and G band. Ion irradiation also leads to the formation of bigger size Au nanoparticles with well defined spherical shape at higher fluences as confirmed by TEM. XRD results demonstrated decrease in FWHM of diffraction peaks indicating the increase in particle size which is in agreement with the result obtained from TEM analysis. Graphical Abstract
ISSN:1738-8090
2093-6788
DOI:10.1007/s13391-018-0099-x