Abstract
The authors demonstrate a simple approach to obtain cathodes that have a high resistance against corrosion by water and oxygen and an air-stable work-function of -3.7 eV by doping 10 at. % of gold (Au) into a magnesium (Mg) base metal layer. Organic light-emitting diodes (OLEDs) with the Mg-Au cathodes achieved electroluminescence characteristics that are comparable to those of devices with conventional cathodes such as aluminum (Al) and Mg-silver (Ag). Although OLEDs with Al or Mg-Ag cathodes exhibited a significant reduction of their emissive area when operated in air, the emissive area of the OLEDs with Mg-Au cathodes decreased only 10% after 10 days of operation in ambient air without any specific encapsulation. These results suggest that Mg-Au cathodes can loosen the strict requirements for encapsulation, reducing the number of process steps and cost of OLED fabrication.
| Original language | English |
|---|---|
| Article number | 4952408 |
| Journal | Journal of Vacuum Science and Technology B: Nanotechnology and Microelectronics |
| Volume | 34 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Jul 1 2016 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Instrumentation
- Process Chemistry and Technology
- Surfaces, Coatings and Films
- Electrical and Electronic Engineering
- Materials Chemistry
Cite this
Magnesium-gold binary alloy for organic light-emitting diodes with high corrosion resistance. / Arai, Hiroya; Nakanotani, Hajime; Morimoto, Kei; Adachi, Chihaya.
In: Journal of Vacuum Science and Technology B: Nanotechnology and Microelectronics, Vol. 34, No. 4, 4952408, 01.07.2016.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Magnesium-gold binary alloy for organic light-emitting diodes with high corrosion resistance
AU - Arai, Hiroya
AU - Nakanotani, Hajime
AU - Morimoto, Kei
AU - Adachi, Chihaya
PY - 2016/7/1
Y1 - 2016/7/1
N2 - The authors demonstrate a simple approach to obtain cathodes that have a high resistance against corrosion by water and oxygen and an air-stable work-function of -3.7 eV by doping 10 at. % of gold (Au) into a magnesium (Mg) base metal layer. Organic light-emitting diodes (OLEDs) with the Mg-Au cathodes achieved electroluminescence characteristics that are comparable to those of devices with conventional cathodes such as aluminum (Al) and Mg-silver (Ag). Although OLEDs with Al or Mg-Ag cathodes exhibited a significant reduction of their emissive area when operated in air, the emissive area of the OLEDs with Mg-Au cathodes decreased only 10% after 10 days of operation in ambient air without any specific encapsulation. These results suggest that Mg-Au cathodes can loosen the strict requirements for encapsulation, reducing the number of process steps and cost of OLED fabrication.
AB - The authors demonstrate a simple approach to obtain cathodes that have a high resistance against corrosion by water and oxygen and an air-stable work-function of -3.7 eV by doping 10 at. % of gold (Au) into a magnesium (Mg) base metal layer. Organic light-emitting diodes (OLEDs) with the Mg-Au cathodes achieved electroluminescence characteristics that are comparable to those of devices with conventional cathodes such as aluminum (Al) and Mg-silver (Ag). Although OLEDs with Al or Mg-Ag cathodes exhibited a significant reduction of their emissive area when operated in air, the emissive area of the OLEDs with Mg-Au cathodes decreased only 10% after 10 days of operation in ambient air without any specific encapsulation. These results suggest that Mg-Au cathodes can loosen the strict requirements for encapsulation, reducing the number of process steps and cost of OLED fabrication.
UR - http://www.scopus.com/inward/record.url?scp=84971264134&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84971264134&partnerID=8YFLogxK
U2 - 10.1116/1.4952408
DO - 10.1116/1.4952408
M3 - Article
VL - 34
JO - Journal of Vacuum Science and Technology B:Nanotechnology and Microelectronics
JF - Journal of Vacuum Science and Technology B:Nanotechnology and Microelectronics
SN - 2166-2746
IS - 4
M1 - 4952408
ER -