Balancing the white emission of OLED by a design of fluorescent blue and phosphorescent green/red emitting layer structures
- Authors
- Lee, Young Hoon; Ju, Byung-Kwon; Jeon, Woo Sik; Kwon, Jang Hyuk; Park, O. Ok; Yu, Jae-Woong; Chin, Byung Doo
- Issue Date
- 2월-2009
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- White OLED; Fluorescent and phosphorescent; Broadband emission; Design methods
- Citation
- SYNTHETIC METALS, v.159, no.3-4, pp.325 - 330
- Indexed
- SCIE
SCOPUS
- Journal Title
- SYNTHETIC METALS
- Volume
- 159
- Number
- 3-4
- Start Page
- 325
- End Page
- 330
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/120700
- DOI
- 10.1016/j.synthmet.2008.09.011
- ISSN
- 0379-6779
- Abstract
- In this paper, we performed the design on the relative thickness of fluorescent-phosphorescent light emitters and evaluated the corresponding change of spectral characteristics of white organic light emitting diode (WOLED). Use of a 3-nm-thick separator composed of undoped phosphorescent host, which provides the confinement of singlet exciton, yields relatively well-defined broadband white emission. The optimized multilayers in WOLED comprises one of the simplest device structures among the reported fluorescent-phosphorescent hybrid WOLEDs. representing the Commission Internationale de I'Eclairage (CIE) 1931 chromaticity ranging from the nearly pure (0.30, 0.35) to warm white (0.35, 0.40) of 9.0-12.5 cd/A (24,000 cd/m(2) at 12 V bias). Although the presented efficiency data is not as high as the reports of others, design principles for a bright and stabilized three-peak-balanced white emission are discussed in detail, which will be beneficial for a step forwards in the development of broadband WOLED. (C) 2008 Elsevier B.V. All rights reserved.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > School of Electrical Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.