Chryssou, CE;
Kenyon, AJ;
Smeeton, TM;
Humphreys, CJ;
Hole, DE;
(2004)
Broadband sensitization of 1.53 mu m Er3+ luminescence in erbium-implanted alumina.
Applied Physics Letters
, 85
(22)
5200 - 5202.
10.1063/1.1829139.
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Abstract
Experimental evidence of an efficient broadband sensitization mechanism in erbium-implanted alumina is presented. Alumina thin films were deposited by plasma-enhanced chemical vapor deposition using trimethyl-amine alane and nitrous oxide. The as-grown films, together with sapphire crystals, were implanted with erbium. Photoluminescence excitation spectra showed that erbium-implanted sapphire crystals exhibit characteristic Er3+ luminescence at 1.53 mum only when pumped resonantly. In contrast, erbium-implanted alumina thin films exhibit 1.53 mum luminescence even when pumped at wavelengths outside Er3+ absorption bands. We postulate that the sensitizing species is either small nanoclusters of aluminum or pairs of aluminum ions. (C) 2004 American Institute of Physics.
| Type: | Article |
|---|---|
| Title: | Broadband sensitization of 1.53 mu m Er3+ luminescence in erbium-implanted alumina |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1063/1.1829139 |
| Publisher version: | http://dx.doi.org/10.1063/1.1829139 |
| Language: | English |
| Additional information: | Copyright 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. The following article appeared in Chryssou, CE and Kenyon, AJ and Smeeton, TM and Humphreys, CJ and Hole, DE (2004) Broadband sensitization of 1.53 mu m Er3+ luminescence in erbium-implanted alumina. APPLIED PHYSICS LETTERS, 85 (22) 5200 – 5202 and may be found at http://link.aip.org/link/?apl/85/05200 |
| Keywords: | AL2O3 THIN-FILMS, SILICON-RICH SILICA, PHOTOLUMINESCENCE CHARACTERIZATION, ENERGY-TRANSFER, NANOCRYSTALS, EXCITATION, SI |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/149457 |
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