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Proceedings Paper

Fabrication and evaluation of efficient light emitters comprising nanocluster-rich SiO2 layers
Author(s): Rossen A. Yankov; Thoralf Gebel; Lars Rebohle; Thomas Trautmann; Wolfgang Skorupa; Guenter Gauglitz; Ruediger Frank
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Paper Abstract

We have demonstrated the feasibility of obtaining intense blue-to-violet electroluminescence (EL) from silicon-based light-emitting structures at room temperature (RT), in line with the need for efficient and inexpensive light sources whose production is compatible with existing silicon device technology. Ion-beam synthesis (IBS) and standard silicon processing have been used to fabricate light-emitting diodes whose active medium is a layer of thermal SiO2 containing germanium nanocrystals. Extensive research has been carried out in three main directions: optimization of the fabrication process, improvement in the device lifetime, and elucidation of the underlying mechanisms of light emission and charge injection/charge transport. This research effort has resulted in the establishment of a set of optimum conditions for the formation of improved-quality Si-based light emitters. It has been shown that the use of plasma treatement is helpful in increasing device lifetime. Issues related to the nature and the excitation of the light-emitting centers have been considered. Finally, the utility of such light-emitting devices in the development of integrated optoelectronic devices as well as Lab-on-a-Chip, microarray and sensor systems has been outlined.

Paper Details

Date Published: 15 September 2004
PDF: 8 pages
Proc. SPIE 5450, Photonic Crystal Materials and Nanostructures, (15 September 2004); doi: 10.1117/12.545402
Show Author Affiliations
Rossen A. Yankov, nanoparc GmbH (Germany)
Thoralf Gebel, nanoparc GmbH (Germany)
Lars Rebohle, nanoparc GmbH (Germany)
Thomas Trautmann, nanoparc GmbH (Germany)
Wolfgang Skorupa, nanoparc GmbH (Germany)
Forschungszentrum Rossendorf (Germany)
Guenter Gauglitz, nanoparc GmbH (Germany)
Forschungszentrum Rossendorf (Germany)
Ruediger Frank, Eberhard-Karls-Univ. Tubingen (Germany)

Published in SPIE Proceedings Vol. 5450:
Photonic Crystal Materials and Nanostructures
Richard M. De La Rue; Pierre Viktorovitch; Clivia M. Sotomayor Torres; Michele Midrio, Editor(s)

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