Optimization of Semitransparent Anode Electrode for Flexible Green and Red Phosphorescent Organic Light-Emitting Diodes
- Authors
- Lee, Ho Won; Park, Jaehoon; Yang, Hyung Jin; Lee, Song Eun; Lee, Seok Jae; Koo, Ja Ryong; Kim, Hye Jeong; Yoon, Seung Soo; Kim, Young Kwan
- Issue Date
- Mar-2015
- Publisher
- AMER SCIENTIFIC PUBLISHERS
- Keywords
- Semitransparent Anode Electrode; Ni/Ag/Ni; ITO-Free; Green PHOLEDs; Red PHOLEDs
- Citation
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.15, no.3, pp.2404 - 2408
- Journal Title
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
- Volume
- 15
- Number
- 3
- Start Page
- 2404
- End Page
- 2408
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/10112
- DOI
- 10.1166/jnn.2015.10243
- ISSN
- 1533-4880
- Abstract
- In this paper, we demonstrated thin film semitransparent anode electrode using Ni/Ag/Ni (3/6/3 nm) on green and red phosphorescent OLEDs, which have basically high efficiency and good optical characteristics. Moreover, we applied this semitransparent anode on flexible green and red phosphorescent OLEDs, which were then optimized for possible applications on flexible substrates. First, we studied optimization using various conditions of Ni/Ag/Ni electrodes via transmittance and sheet resistance. We then fabricated the devices on a glass substrate with ITO or Ni/Ag/Ni electrodes as well as on a flexible substrate with a Ni/Ag/Ni electrode for green and red phosphorescent OLEDs. Consequently, we could be proposed that the potential of our semitransparent anode electrode is demonstrated. Green phosphorescent OLEDs characteristics using ITO or Ni/Ag/Ni anode electrodes were coincided and those of the red phosphorescent OLEDs were improved by semitransparent electrodes at 10,000 cd/m(2) criterion. Therefore, this research suggests for additional studies to be conducted on flexible and high-performance phosphorescent OLED displays and light applications for ITO-free processes.
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