Abstract
From photoluminescence measurements on sensitized erbium in a-Si/SiO2:Er/SiO2 multilayers, we determine the characteristic interaction length of the sensitization process from the silicon-layer sensitizer to the erbium-ion receiver to be 0.22±0.02 nm. By using sufficiently low temperatures in the fabrication steps, we ensure that diffusion of erbium ions does not affect our results. In addition, we demonstrate that saturation of the erbium 4I13/2→ 4I15/2 transition may lead to an exaggerated estimate of the interaction distance.
Original language | English |
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Journal | Physical Review B |
Volume | 84 |
Issue | 8 |
Pages (from-to) | 085403 |
Number of pages | 7 |
ISSN | 2469-9950 |
DOIs | |
Publication status | Published - 2011 |