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Room Temperature Photoluminescence From Nanostructured Amorphous Carbon

Henley, S J, Carey, JD and Silva, S R (2004) Room Temperature Photoluminescence From Nanostructured Amorphous Carbon Applied Physics Letters, 85 (25). ISSN 00036951

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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 (P-Ar). By varying P-Ar 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 sp(2) 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 sp(2) rich phase.

Item Type: Article
Additional Information: Published in <i>Applied Physics Letters,</i> Vol. 85, Iss. 25. Copyright 2004 American Institute of Physics. Click <a href=http://apl.aip.org/>here</a> to access the journal's website.
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 14:09
Last Modified: 23 Sep 2013 18:28
URI: http://epubs.surrey.ac.uk/id/eprint/438

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