Room temperature photoluminescence from nanostructured amorphous carbon
作者： S. J. Henley , J. D. Carey , S. R. P. Silva
DOI: 10.1063/1.1839641
关键词: Analytical chemistry 、 Argon 、 Pulsed laser deposition 、 Photoluminescence 、 Thin film 、 Amorphous solid 、 Carbon 、 Amorphous carbon 、 Materials science 、 Raman spectroscopy
摘要: 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 5 to 340 mTorr, the film morphology changed smooth rough and at highest pressures, low-density filamentary growth observed. Over same pressure regime an increase ordering sp(2) bonded C content using visible Raman spectroscopy. The origin PL is discussed terms improved carrier localization within increased rich phase.
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