Highly flexible, transparent, and low resistance indium zinc oxide-Ag-indium zinc oxide multilayer anode on polyethylene terephthalate substrate for flexible organic light-emitting diodes
- Authors
- Cho, Sung-Woo; Jeong, Jin-A; Bae, Jung-Hyeok; Moon, Jong-Min; Choi, Kwang-Hyuk; Jeong, Soon Wook; Park, No-Jin; Kim, Jang-Joo; Lee, Se Hyung; Kang, Jae-Wook; Yi, Min-Su; Kim, Han-Ki
- Issue Date
- 1-Sep-2008
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- indium zinc oxide; IZO-Ag-IZO; anode; polyethylene terephthalate; flexible organic light-emitting diodes
- Citation
- THIN SOLID FILMS, v.516, no.21, pp 7881 - 7885
- Pages
- 5
- Journal Title
- THIN SOLID FILMS
- Volume
- 516
- Number
- 21
- Start Page
- 7881
- End Page
- 7885
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/23862
- DOI
- 10.1016/j.tsf.2008.06.025
- ISSN
- 0040-6090
- Abstract
- The characteristics of indium zinc oxide (IZO)-Ag-IZO multilayer grown on a polyethylene terephthalate (PET) substrate were investigated for flexible organic light-emitting diodes (OLEDs). The IZO-Ag-IZO (IAI) multilayer anode exhibited a remarkably reduced sheet resistance of 6.93 Omega/square and a high transmittance of 84.8%, despite the very thin thickness of the IZO (30 nm) layer. In addition, it was shown that electrical and optical properties of [A] anodes are critically dependent on the thickness of the Ag layer, due to the transition of Ag atoms from distinct islands to continuous films at a critical thickness (12 nm). Moreover, the IAI/PET sample showed more stable mechanical properties than an amorphous ITO/PET sample during the bending test due to the existence of a ductile Ag layer. The current density-voltage-luminance characteristics of flexible OLEDs fabricated on an IAI/PET substrate was better than those of flexible OLEDs fabricated on an ITO/PET substrate. This indicates that IAI multilayer anodes are promising flexible and transparent electrodes for flexible OLEDs. (C) 2008 Elsevier B.V. All rights reserved.
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