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Proceedings Paper

A three-spectrum white OLED using green and new red phosphorescent sensitizers
Author(s): Tien-shou Shieh; Yueh-Chuan Huang; Shu-Tang Yeh; Miao-Tsai Chu; Mei-Rurng Tseng
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Paper Abstract

We develop a three-spectrum white organic light-emitting diodes (WOLED) with blue phosphor-sensitized electrofluorescent, green and new red electrophosphorescent emissions. The green phosphorescent sensitizers are bis[5-(trifluoromethyl)-2-(4-fluorophenyl)pyridine]iridium(III)acetylacetonate (Ir-2h) or Bis(2-phenylpyridine) iridium(III)3-Methyl-2,4-pentanedione (Ir(ppy)2mac), and the new red phosphorescent sensitizer is a phenyl-qoinazoline framework organo-iridium complex. The RGB peaks of WOLED with Ir-2h are at a wavelength of 440nm, 516nm, and 633nm, respectively. However, The RGB peaks of WOLED are at a wavelength of 440nm, 550nm, and 625nm, respectively, when the green phosphorescent sensitizer is replaced by Ir(ppy)2mac. Besides, the peak at a wavelength of 550nm is broader than the former. Therefore, The former WOLED of RGB spectra are the most distinct than the later one. The former WOLED has efficiency of 3.3 lm/W (7.15Cd/A) at 1000 Cd/m2, and CIE coordinates of (0.32, 0.35). It is good suitability to use in OLED displays based on RGB color filters and full-color LCD backlights.

Paper Details

Date Published: 5 December 2006
PDF: 7 pages
Proc. SPIE 6333, Organic Light Emitting Materials and Devices X, 633318 (5 December 2006); doi: 10.1117/12.677110
Show Author Affiliations
Tien-shou Shieh, Industrial Technology Research Institute (Taiwan)
Yueh-Chuan Huang, Industrial Technology Research Institute (Taiwan)
Shu-Tang Yeh, Industrial Technology Research Institute (Taiwan)
Miao-Tsai Chu, Industrial Technology Research Institute (Taiwan)
Mei-Rurng Tseng, Industrial Technology Research Institute (Taiwan)

Published in SPIE Proceedings Vol. 6333:
Organic Light Emitting Materials and Devices X
Zakya H. Kafafi; Franky So, Editor(s)

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