Space-separated quantum cutting in differently prepared solid-state dispersions of Si nanocrystals and Er3+ ions in SiO2
| Authors | |
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| Publication date | 15-03-2009 |
| Journal | Materials Science and Engineering B-Advanced Functional Solid-State Materials |
| Volume | Issue number | 159-160 |
| Pages (from-to) | 87-89 |
| Organisations |
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| Abstract | We investigate the efficiency of Si nanocrystal-mediated photoluminescence of Er3+ ions in SiO2 as a function of quantum energy of incoming photons. We demonstrate that for identical nanocrystals the threshold energy of the recently reported space-separated quantum cutting effect does not change with the nanocrystal-to-Er distance. In contrast, the enhancement of excitation efficiency observed above the threshold, in the high-energy photon regime, diminishes at larger separations, thus exhibiting a clear nanocrystal-to-Er distance dependence. |
| Document type | Article |
| Language | English |
| Published at |
https://doi.org/10.1016/j.mseb.2009.02.010
(Final published version)
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