A thermal study of amorphous and textured carbon and carbon nitride thin films via transient grating spectroscopy
Name
manuscript_draft_CAD_MPS-1.pdf
Size
1.45 MB
Format
Adobe PDF
Checksum (MD5)
3b496cad9b2e702092b680886007d5a3
Author(s)
Cometto, Olivier
Dennett, Cody Andrew
Tsang, Siu Hon
Teo, Edwin H.T.
Short, Michael P
Alternative Title
A thermal study of amorphous and textured carbon and carbon nitride thin films via transient grating spectroscopy
Date Issued
April 2018
Journal
Carbon
Publisher
Elsevier BV
Citation
Cornetto, Olivier et al. "A thermal study of amorphous and textured carbon and carbon nitride thin films via transient grating spectroscopy." Carbon 130 (April 2018): 355-361 © 2018 Elsevier Ltd
Version
Original manuscript
Abstract
In this study, we are considering a novel way of growing carbon nitride (CN) films by using High Power Impulse Magnetron Sputtering (HiPIMS). Carbon and CN thin films were grown on silicon substrate with varying nanocrystalline texturing: some samples were amorphous while others were either nanocrystalline graphite (for the carbon sample) or fullerene-like (for the CN sample), with both samples having a graphitic nanostructure vertically ordered throughout the film. Their thermal diffusivity was computed using transient grating spectroscopy in order to compare the impact of the material's nanostructure on its thermal property as well as benchmarking the performance of CN. It was found that the thermal properties of carbon thin films were decreased when doped with nitrogen, which is attributed to the increased atomic disorder introduced by the nitrogen cross-linking, impacting the phonon propagation. The impact of nitrogen doping on thermal properties opens new avenues in engineering materials with tailored and varying thermal properties at the microscale. Keywords: Carbon nitride; HiPIMS; Transient grating spectroscopy
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Terms of Use
Creative Commons Attribution-NonCommercial-NoDerivs License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1016/j.carbon.2018.01.025
