Tri-Metal Layered Semitransparent Electrode for Red Phosphorescent Organic Light-Emitting Diodes
- Authors
- Lee, Jae Woo; Lee, Ho Won; Lee, Song Eun; Yang, Hyung Jin; Lee, Sung Kyu; Hwang, Kyo Min; Park, Soo Na; Yoon, Seung Soo; Kim, Young Kwan
- Issue Date
- Oct-2015
- Publisher
- AMER SCIENTIFIC PUBLISHERS
- Keywords
- Organic Light-Emitting Diodes; Semitransparent Electrode; Tri-Metal Layer; Micro-Cavity Effect; ITO-Free Electrode
- Citation
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.15, no.10, pp.8144 - 8148
- Journal Title
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
- Volume
- 15
- Number
- 10
- Start Page
- 8144
- End Page
- 8148
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/9431
- DOI
- 10.1166/jnn.2015.11268
- ISSN
- 1533-4880
- Abstract
- In this paper, we fabricated tri-metal layered thin film semitransparent electrodes consisting of a thin conductive metal layer, sandwiched between two nickel layers. An equal red phosphorescent organic light-emitting diode (PHOLED) structure was deposited on the anodes of indium tin oxide (ITO) and three types of tri-metal layers (Ni/Al/Ni, Ni/Cu/Ni, and Ni/Ag/Ni, thickness of 3/7/3 nm in common) on a glass substrate. The optical and electrical performances of the device using Ni/Ag/Ni were improved more than the performances of the other devices due to the micro-cavity effect in accordance with the various electrode characteristics. Moreover, we fabricated the same red PHOLED structures on a flexible substrate, as a consequence, showed competitive emission characteristics compared to the devices fabricated on a glass substrate. Therefore, this study could succeed to additional research on flexible display panel and light-emitting devices with ITO-free electrodes.
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