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Proceedings Paper

Developments in OLEDs with a co-dopant system for improved efficiency and stability
Author(s): Hiroshi Kanno; Yuji Hamada; Noriyuki Matsusue; Hisakazu Takahashi; Ryuji Nishikawa; Kazunobu Mameno
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Paper Abstract

Development of RGB material has already reached the level of commercial products for full color displays devices such as digital cameras. However, the key challenges that still remain are improving luminance efficiency for lower power consumption and better stability. Applying a co-dopant into the EML is an effective way to adjust device performance. A large proportion of power is consumed in red sub-pixels in full-color displays with RGB sub-pixels. Previously we found that rubrene doping of red emitting layer improved the luminance efficiency and operational stability by enhancing the energy transfer from host material to emitting dopant. To increase the efficiency, a phosphorescent material as a red emitter was studied. We review the requirements for and characteristics of RGB OLEDs and the impact of co-doping systems on the performance of full-color displays.

Paper Details

Date Published: 16 February 2004
PDF: 9 pages
Proc. SPIE 5214, Organic Light-Emitting Materials and Devices VII, (16 February 2004); doi: 10.1117/12.515115
Show Author Affiliations
Hiroshi Kanno, SANYO Electric Co., Ltd. (Japan)
Yuji Hamada, SANYO Electric Co., Ltd. (Japan)
Noriyuki Matsusue, SANYO Electric Co., Ltd. (Japan)
Hisakazu Takahashi, SANYO Electric Co., Ltd. (Japan)
Ryuji Nishikawa, SANYO Electric Co., Ltd. (Japan)
Kazunobu Mameno, SANYO Electric Co., Ltd. (Japan)

Published in SPIE Proceedings Vol. 5214:
Organic Light-Emitting Materials and Devices VII
Zakya H. Kafafi; Paul A. Lane, Editor(s)

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