Effect of oxidation of copper nanoparticles on absorption spectra of DLC:Cu nanocomposites

In the present work diamond like carbon (DLC) films with embedded Cu nanoparticles were researched. The spectral characteristics of Cu nanoparticles, Cu-CuO and Cu-Cu2O nanoshells and nanocomposites on their base were studied including effects of size of nanoparticles. These studies included experim...

Full description

Saved in:
Bibliographic Details
Published in:Diamond and related materials 2019-11, Vol.99, p.107538, Article 107538
Main Authors: Yaremchuk, I., Meškinis, Š., Bulavinets, T., Vasiliauskas, A., Andrulevičius, M., Fitio, V., Bobitski, Ya, Tamulevičius, S.
Format: Article
Language:English
Subjects:
Absorption spectra
Copper
Copper nanoparticles
Copper oxides
Diamond like carbon
Diamond-like carbon films
Dipoles
Effective medium theory
Nanocomposite
Nanocomposites
Nanoparticles
Nanoshells
Oxidation
Red shift
Surface plasmon resonance
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In the present work diamond like carbon (DLC) films with embedded Cu nanoparticles were researched. The spectral characteristics of Cu nanoparticles, Cu-CuO and Cu-Cu2O nanoshells and nanocomposites on their base were studied including effects of size of nanoparticles. These studies included experimental research and theoretical simulations based on Bruggeman effective medium theory and dipole equivalence method. It is shown that experimentally observed relatively small redshift of the absorption peak of the DLC:Cu, having place for a wide range of Cu atomic concentration and Cu nanoparticle size, is mostly due to the oxidation of embedded copper nanoparticles. [Display omitted] •The diamond like carbon films with embedded Cu nanoparticles were researched.•Small redshift of the plasmonic peak with increased Cu amount is related to the nanoparticle oxidation.•Cu nanoparticle oxide shell thickness increased when filling factor of nanoparticles increased.
ISSN:0925-9635
1879-0062
DOI:10.1016/j.diamond.2019.107538