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High-Performance Flexible Organic Light-Emitting Diodes Using Amorphous Indium Zinc Oxide Anode

Cited 87 time in Web of Science Cited 102 time in Scopus
Authors
Kang, Jae-Wook; Jeong, Won-Ik; Kim, Jang-Joo; Kim, Han-Ki; Kim, Do-Geun; Lee, Gun-Hwan
Issue Date
2007-03-30
Publisher
Electrochemical Society
Citation
Electrochem. Solid-State Lett., 10, J75 (2007)
Keywords
organic light emitting diodeszinc compoundsIII-V semiconductorsindium compoundsanodeselectrical conductivityelectrical resistivity
Abstract
We demonstrate a high-performance flexible organic light-emitting diode (OLED) employing amorphous indium zinc oxide (IZO) anode. The amorphous IZO on flexible polycarbonate (PC) substrate shows similar electrical conductivity and optical transmittance with commercial (ITO) glass, even though it was prepared at <50°C. Moreover, it exhibits little resistance change during 5000 bending cycles, demonstrating good mechanical robustness. A green phosphorescent OLED fabricated on amorphous IZO on flexible PC shows maximum external quantum efficiency of ext=13.7% and power efficiency of p=32.7 lm/W, which are higher than a device fabricated on a commercial ITO on glass (ext=12.4% and p=30.1 lm/W) and ITO on flexible PC (ext=8.5% and p =14.1 lm/W). The mechanical robustness and low-temperature deposition of IZO combined with high OLED performance clearly manifest that the amorphous IZO is a promising anode material for flexible displays.
ISSN
1099-0062
Language
English
URI
http://hdl.handle.net/10371/7022
DOI
https://doi.org/10.1149/1.2720635
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Material Science and Engineering (재료공학부) Journal Papers (저널논문_재료공학부)
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