Phosphorescent White Organic Light-Emitting Diodes by Electron Transporting Layer Engineering
- Authors
- Lee, Seok Jae; Koo, Ja Ryong; Lee, Dong Hyung; Lee, Ho Won; Lee, Kum Hee; Yoon, Seung Soo; Kim, Young Kwan
- Issue Date
- Oct-2014
- Publisher
- AMER SCIENTIFIC PUBLISHERS
- Keywords
- White PHOLED; Dual Electron Transporting Layer; Stepwise Electron Transporting Layer
- Citation
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.14, no.10, pp.7835 - 7838
- Journal Title
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
- Volume
- 14
- Number
- 10
- Start Page
- 7835
- End Page
- 7838
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/16560
- DOI
- 10.1166/jnn.2014.9398
- ISSN
- 1533-4880
- Abstract
- The authors describe the fabrication of white organic light-emitting diodes (WOLEDs) with dual electron transporting layers (D-ETL) using 2,9-dimethyl-4,7-diphenyl-1,10-phenanhroline/4,7-diphenyl-1,10-phenanthroline (BPhen) and bis-(2-methyl-8-quinolinolate)-4-(phenylphenolato) aluminum/BPhen. Stepwise D-ETL easily transports electrons easily to the emitting layer and reduces the leakage of electrons. Therefore, WOLEDs with D-ETL show higher external quantum efficiency (EQE) when compared to a control WOLED with a single ETL device. The optimized WOLEDs showed a peak EQE of 13.0%, luminous efficiency of 27.4 cd/A, and Commission Internationale de L'Eclairage coordinates of (0.40, 0.39) at 1000 cd/m(2).
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Collections - College of Engineering > Department of Science > 1. Journal Articles
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