Towards population inversion of electrically pumped Er ions sensitized by Si nanoclusters.
2230 - 2235.
148747_Opt Express 2010.pdf
Available under License : See the attached licence file.
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
|Title:||Towards population inversion of electrically pumped Er ions sensitized by Si nanoclusters|
|Open access status:||An open access version is available from UCL Discovery|
|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|
Archive Staff Only