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.
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.
|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|
|Deposited By:||Mr Adam Field|
|Deposited On:||27 May 2010 15:38|
|Last Modified:||14 Nov 2012 13:10|
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