Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/128618
Title: | Erbium emission in MOS light emitting devices: from energy transfer to direct impact excitation |
Author: | Ramírez Ramírez, Joan Manel Ferrarese Lupi, Federico Jambois, Olivier Berencén Ramírez, Yonder Antonio Navarro Urrios, Daniel Anopchenko, Aleksei Marconi, Alessandro Prtljaga, Nikola Tengattini, Andrea Pavesi, Lorenzo Colonna, Jean-Philippe Fedeli, Jean-Marc Garrido Fernández, Blas |
Keywords: | Metall-òxid-semiconductors Compostos de silici Transferència d'energia Metal oxide semiconductors Silicon compounds Energy transfer |
Issue Date: | 13-Mar-2012 |
Publisher: | Institute of Physics (IOP) |
Abstract: | The electroluminescence (EL) at 1.54 µm of metal-oxide-semiconductor (MOS) devices with Er3+ ions embedded in the silicon-rich silicon oxide (SRSO) layer has been investigated under different polarization conditions and compared with that of erbium doped SiO2 layers. EL time-resolved measurements allowed us to distinguish between two different excitation mechanisms responsible for the Er3+ emission under an alternate pulsed voltage signal (APV). Energy transfer from silicon nanoclusters (Si-ncs) to Er3+ is clearly observed at low-field APV excitation. We demonstrate that sequential electron and hole injection at the edges of the pulses creates excited states in Si-ncs which upon recombination transfer their energy to Er3+ ions. On the contrary, direct impact excitation of Er3+ by hot injected carriers starts at the Fowler-Nordheim injection threshold (above 5 MV cm−1) and dominates for high-field APV excitation. |
Note: | Versió postprint del document publicat a: https://doi.org/10.1088/0957-4484/23/12/125203 |
It is part of: | Nanotechnology, 2012, vol. 23, num. 12, p. 125203-125211 |
URI: | http://hdl.handle.net/2445/128618 |
Related resource: | https://doi.org/10.1088/0957-4484/23/12/125203 |
ISSN: | 0957-4484 |
Appears in Collections: | Articles publicats en revistes (Enginyeria Electrònica i Biomèdica) Publicacions de projectes de recerca finançats per la UE |
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