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Proceedings Paper

Resonant-cavity organic light-emitting diodes for low-cost optical interconnects between CMOS silicon circuits
Author(s): Frederique Jean; Jean-Yves Mulot; Pierre Cambon; Bernard Geffroy; Christine Denis; Andre Lorin; Fabrice Venturati; Jean-Michel Nunzi
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Paper Abstract

The possibility to integrate an optical emitter at any point in a silicon integrated circuit would represent a major breakthrough in the field of optical interconnects between circuits or in the same circuit. The outstanding properties of luminescent organic semiconductors, such as their ability to be deposited on various substrates and their efficiency, make them good candidates for this kind of applications. In addition, microcavities limit the spectral and spatial distributions of the emitted light, which makes the integration of the light source easier in an optical interconnection system. We studied resonant-cavity organic light-emitting diodes (RC-OLEDs) such as Al/ITO/CuPc/TPD/Alq3/Al which were made on silicon substrates. ITO was deposited by magnetron sputtering and the other materials by vacuum evaporation through masks. Aluminum was chosen to make the mirrors because it is widely used in CMOS technology. The thickness of each layer was chosen so that the optical length of the cavity is 3 * (lambda) res/2 where (lambda) res is the resonant wavelength. We described these planar multilayer microcavities using a transfer-matrix multiplication method. The devices were characterized by photoluminescence and electroluminescence, and the experimental results are in good agreement with the model. The current-voltage characteristics were measured while the electrical model is currently under study.

Paper Details

Date Published: 15 June 2001
PDF: 9 pages
Proc. SPIE 4279, Organic Photonic Materials and Devices III, (15 June 2001); doi: 10.1117/12.429375
Show Author Affiliations
Frederique Jean, Institut Superieur d'Electronique de Bretagne (France)
Jean-Yves Mulot, Institut Superieur d'Electronique de Bretagne (France)
Pierre Cambon, Institut Superieur d'Electronique de Bretagne (France)
Bernard Geffroy, CEA-LETI (France)
Christine Denis, CEA-LETI (France)
Andre Lorin, CEA-LETI (France)
Fabrice Venturati, CEA-LETI (France)
Jean-Michel Nunzi, CEA-LETI (France)

Published in SPIE Proceedings Vol. 4279:
Organic Photonic Materials and Devices III
Bernard Kippelen; Donal D. C. Bradley, Editor(s)

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