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Room temperature photoluminescence from nanostructured amorphous carbon

Henley, S. J., Carey, JD and Silva, S. R. P. (2004) Room temperature photoluminescence from nanostructured amorphous carbon Applied Physics Letters, 85. pp. 6236-6238.

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Abstract

Visible room-temperature photoluminescence (PL) was observed from hydrogen-free nanostructured amorphous carbon films deposited by pulsed laser ablation in different background pressures of argon (PAr). By varying PAr from 5 to 340 mTorr, the film morphology changed from smooth to rough and at the highest pressures, low-density filamentary growth was observed. Over the same pressure regime an increase in the ordering of sp2 bonded C content was observed using visible Raman spectroscopy. The origin of the PL is discussed in terms of improved carrier localization within an increased sp2 rich phase.

Item Type: Article
Additional Information: This is a pre-copy-editing, author-prepared, peer-reviewed PDF of an article accepted for publication in Applied Physics Letters. The article appeared in Applied Physics Letters, 85, 6236-6238. Click here to access the publisher's version. © 2004 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
Divisions: Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute > Nano-Electronics Centre
Depositing User: Mr Adam Field
Date Deposited: 27 May 2010 14:38
Last Modified: 23 Sep 2013 18:31
URI: http://epubs.surrey.ac.uk/id/eprint/1205

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