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Proceedings Paper

Highly efficient phosphorescent guest-host-systems for hybrid inverted organic light-emitting diodes with sputtered indium-tin-oxide anodes
Author(s): Michael Kroeger; Thomas Dobbertin; Daniel Schneider; Torsten Rabe; Eike Becker; Hans-Hermann Johannes; Wolfgang Kowalsky
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Paper Abstract

Inverted organic light-emitting diodes showing light emission from the top are discussed. Top-emitting organic light-emitting diodes are required for next-generation active-matrix organic light-emitting displays , as Si-driving circuitry has to be incorporated into the display itself. We focus on hybrid anodes, thereby giving a simple model for spin-coating of PEDOT:PSS on top of an organic layer-stack, LiF-based cathodes and phosphorescent emitters, allowing for highly efficient inverted organic light emitting diodes. A maximum current efficiency of 55.4 cd/A at 140 cd/m2 and a maximum luminous efficiency of 17.2 lm/W at 50 cd/m2 has been obtained.

Paper Details

Date Published: 10 November 2004
PDF: 10 pages
Proc. SPIE 5519, Organic Light-Emitting Materials and Devices VIII, (10 November 2004); doi: 10.1117/12.558913
Show Author Affiliations
Michael Kroeger, Technische Univ. Braunschweig (Germany)
Thomas Dobbertin, Technische Univ. Braunschweig (Germany)
Daniel Schneider, Technische Univ. Braunschweig (Germany)
Torsten Rabe, Technische Univ. Braunschweig (Germany)
Eike Becker, Technische Univ. Braunschweig (Germany)
Hans-Hermann Johannes, Technische Univ. Braunschweig (Germany)
Wolfgang Kowalsky, Technische Univ. Braunschweig (Germany)

Published in SPIE Proceedings Vol. 5519:
Organic Light-Emitting Materials and Devices VIII
Zakya H. Kafafi; Paul A. Lane, Editor(s)

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