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Proceedings Paper

Cavity effect of transparent organic emitting device using metal cathode
Author(s): Chan J. Lee; Ramchandea Balaji Pode; Dae-Gyu Moon; Jeong-In Han
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Paper Abstract

We simulated modification of brightness as electrode, ITO anode and semitransparent cathode in the transparent organic light emitting device (TOLED). Semitransparent cathodes were used thin metal films, Ca-Ag and LiF-Al. Ca-Ag electrode has a higher transmittance 71% and lower reflectance 13% as compared to 32% and 24% of LiF-Al at 530nm. Reflectance of these material affected brightness and spectrum. Ratio of emitted lights intensity through ITO and metal cathode was calculated theoretically to use reflectance and transmittance of each electrode. Calculated ratio of brightness is in agreement with the measured ones to each electrode. Brightness of emitted light through ITO is about 3.2 and 1.5 times higher than through LiF-Al and Ca-Ag cathodes, respectively. In case of LiF-Al, ratio of transmitted light through the electrode was very different and spectra of light through LiF-Al were accompanied with the interference fringes.

Paper Details

Date Published: 8 September 2004
PDF: 8 pages
Proc. SPIE 5464, Organic Optoelectronics and Photonics, (8 September 2004); doi: 10.1117/12.545348
Show Author Affiliations
Chan J. Lee, Korea Electronics Technology Institute (South Korea)
Ramchandea Balaji Pode, Korea Electronics Technology Institute (South Korea)
Dae-Gyu Moon, Korea Electronics Technology Institute (South Korea)
Jeong-In Han, Korea Electronics Technology Institute (South Korea)

Published in SPIE Proceedings Vol. 5464:
Organic Optoelectronics and Photonics
Paul L. Heremans; Michele Muccini; Hans Hofstraat, Editor(s)

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