Room Temperature Photoluminescence From Nanostructured Amorphous Carbon
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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 |
| ID Code: | 438 |
| Deposited By: | Mr Adam Field |
| Deposited On: | 27 May 2010 15:09 |
| Last Modified: | 14 Nov 2012 13:21 |
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