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Towards population inversion of electrically pumped Er ions sensitized by Si nanoclusters

Jambois, O; Gourbilleau, F; Kenyon, AJ; Montserrat, J; Rizk, R; Garrido, B; (2010) Towards population inversion of electrically pumped Er ions sensitized by Si nanoclusters. Optics Express , 18 (3) 2230 - 2235. 10.1364/OE.18.002230. Green and gold open access

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Abstract

This study reports the estimation of the inverted Er fraction in a system of Er doped silicon oxide sensitized by Si nanoclusters, made by magnetron sputtering. Electroluminescence was obtained from the sensitized erbium, with a power efficiency of 10(-2)%. By estimating the density of Er ions that are in the first excited state, we find that up to 20% of the total Er concentration is inverted in the best device, which is one order of magnitude higher than that achieved by optical pumping of similar materials. (C) 2009 Optical Society of America

Type:Article
Title:Towards population inversion of electrically pumped Er ions sensitized by Si nanoclusters
Open access status:An open access publication. A version is also available from UCL Discovery.
DOI:10.1364/OE.18.002230
Publisher version:http://dx.doi.org/10.1364/OE.18.002230
Language:English
Additional information:©2010 Optical Society of America
Keywords:SILICON NANOCRYSTALS, ELECTROLUMINESCENCE
UCL classification:UCL > School of BEAMS > Faculty of Engineering Science > Electronic and Electrical Engineering

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