Optical transmission characteristics of epsilon negative tri-metal layer electrode for OLED
- Authors
- Lee, Ho Won; Choi, Bo-Hee; Lee, Song Eun; Lee, Jeong-Hae; Kim, Young Kwan
- Issue Date
- Aug-2017
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Epsilon negative; Tri-metal layer electrode; Optical transmittance; Red phosphorescent organic light-emitting diodes; Micro-cavity effect
- Citation
- JOURNAL OF LUMINESCENCE, v.188, pp.112 - 117
- Journal Title
- JOURNAL OF LUMINESCENCE
- Volume
- 188
- Start Page
- 112
- End Page
- 117
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/5432
- DOI
- 10.1016/j.jlumin.2017.03.047
- ISSN
- 0022-2313
- Abstract
- In this work, the optical characteristics of various epsilon negative tri-metal layer electrodes on organic light-emitting diodes (OLEDs) are investigated by full wave simulation and experiments to establish a transmittance database based on the kind and thickness of the metals. The established database shows that the optical transmittance of tri-metal layer electrode heavily depends on the absolute value of negative epsilon and the thickness of each metal layer. Tri-metal layer electrode structures were fabricated by sandwiching Ag, Cu, and Al between two Ni layers for red phosphorescent OLEDs. The electrical and optical characteristics of indium-tin-oxide (ITO) based and tri-metal layer electrodes-based devices are compared and the results indicate that the proposed tri-metal layer could replace ITO in optical applications. (C) 2017 Elsevier B.V. All rights reserved.
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- Appears in
Collections - College of Engineering > Department of Science > 1. Journal Articles
- College of Engineering > School of Electronic & Electrical Engineering > 1. Journal Articles
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