Space-separated quantum cutting in differently prepared solid-state dispersions of Si nanocrystals and Er<sup>3+</sup> ions in SiO<inf>2</inf>
- Publication Type:
- Journal Article
- Materials Science and Engineering B: Solid-State Materials for Advanced Technology, 2009, 159-160 (C), pp. 87 - 89
- Issue Date:
Copyright Clearance Process
- Recently Added
- In Progress
- Closed Access
This item is closed access and not available.
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. © 2009 Elsevier B.V. All rights reserved.
Please use this identifier to cite or link to this item: