The role of Er3+–Er3+ separation on the luminescence of Er–doped Al2O3 films prepared by pulsed laser deposition
- 27 December 1999
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 75 (26) , 4073-4075
- https://doi.org/10.1063/1.125540
Abstract
3 pages, 3 figures, 1 table.Erbium-doped Al2O3 films have been deposited in a single step process by pulsed laser deposition using independent ablation of Al2O3 and Er targets. This procedure allows to control the Er3+ ions in-depth distribution. The characteristic Er3+ photoluminescence at 1.54 μm shows lifetime values which increase from 6.0 to 7.1 ms when the Er3+–Er3+ in-depth separation is increased from 3 to 9 nm. These results are discussed in terms of the ion–ion interaction and clustering for separations shorter than 6 nm.This work was supported by CICYT (Spain) under\ud TIC96-0467 project and by GDR86 of the CNRS (France).Peer revieweKeywords
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