The influence of surface functionalisation on the electrical properties and thermal stability of nanodiamonds

Journal Article · Tue Oct 07 04:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4897218· OSTI ID:22305755

Welch, Joseph O; Li, Pei; Chaudhary, Aysha; Edgington, Robert

Detonation nanodiamond (ND) has recently emerged as a useful new class of diamond material. However, to date there has been little investigation of the electrical properties of this material. Due to the nanoscale dimensions, the surface functionalisation of the individual ND is of particular importance to the characteristics of ND films. Here, hydrogen and oxygen termination of ND, verified using Fourier transform infrared spectroscopy, are shown to strongly influence the electronic properties of NDs. Hydrogen terminated ND exhibiting a far greater resilience to thermal decomposition when compared to the oxygen terminated NDs. Moreover, H-NDs also displayed so-called “surface conductivity,” a property displayed by hydrogen-terminated bulk diamond films, whilst O-NDs display properties high resistivity. These results indicate that under the correct conditions ND layers can display similar electrical properties to “bulk” diamond thin films.

• OSTI ID: 22305755
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 13 Vol. 116; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
DIAMONDS
ELECTRICAL PROPERTIES
EXPLOSIONS
FOURIER TRANSFORM SPECTROMETERS
HYDROGEN
LAYERS
NANOMATERIALS
NANOSTRUCTURES
OXYGEN
PYROLYSIS
STABILITY
SURFACES
THERMODYNAMIC PROPERTIES
THIN FILMS