Effect of Low Pressure Remote Plasma Treatment on Damage Reduction of Emitting Organic Layer for Top-Emission Organic Light-Emitting Diodes

2006 ◽  
Vol 45 (No. 13) ◽  
pp. L376-L379 ◽  
Author(s):  
Deuk Yeon Lee ◽  
Hong Koo Baik
Keyword(s):  
Plasma Treatment ◽  
Light Emitting Diodes ◽  
Low Pressure ◽  
Organic Light Emitting Diodes ◽  
Organic Layer ◽  
Remote Plasma ◽  
Light Emitting ◽  
Damage Reduction ◽  
Organic Light

scholarly journals Oxygen Plasma Treatment of Rear Multilayered Graphene: A Potential Top Electrode for Transparent Organic Light-Emitting Diodes

Materials ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6652
Author(s):  
Jong Tae Lim
Keyword(s):  
Plasma Treatment ◽  
Transfer Process ◽  
Oxygen Plasma ◽  
Light Emitting Diodes ◽  
Metal Electrode ◽  
Organic Light Emitting Diodes ◽  
Oxygen Plasma Treatment ◽  
Physical Damage ◽  
Light Emitting ◽  
Organic Light

One of the core technologies of transparent organic light-emitting diodes (TOLEDs) is to develop an optically transparent and high electrical conductivity electrode so that light generated inside the device can efficiently escape into the air through the electrodes. We recently reported in TOLED research that two flipping processes are required to dry-transfer the front multilayered graphene (MLG) to the top electrode, while the rear MLG requires one dry transfer process. As the transfer process increases, the electrical properties of graphene deteriorate due to physical damage and contamination by impurities. At the charge-injecting layer/MLG interface constituting the TOLED, the rear MLG electrode has significantly lower charge injection characteristics than the front MLG electrode, so it is very important to improve the electrical characteristics of the rear MLG. In this paper, we report that the light-emitting properties of the TOLED are improved when an oxygen plasma-treated rear MLG is used as the top electrode, as compared with untreated rear MLG. In addition, the fabricated device exhibits a transmittance of 74–75% at the maximum electroluminescence wavelength, and the uniformity of transmittance and reflectance is more constant at a wavelength of 400–700 nm than in a device with a metal electrode. Finally, near-edge X-ray absorption fine structure spectroscopic analysis proves that the MLG crystallinity is improved with the removal of impurities on the surface after oxygen plasma treatment.

Enhanced light out-coupling efficiency of organic light-emitting diodes with an extremely low haze by plasma treated nanoscale corrugation

Nanoscale ◽  
2015 ◽  
Vol 7 (6) ◽  
pp. 2723-2728 ◽  
Author(s):  
Ju Hyun Hwang ◽  
Hyun Jun Lee ◽  
Yong Sub Shim ◽  
Cheol Hwee Park ◽  
Sun-Gyu Jung ◽  
...  
Keyword(s):  
Plasma Treatment ◽  
Light Emitting Diodes ◽  
Coupling Efficiency ◽  
Organic Light Emitting Diodes ◽  
Light Extraction ◽  
Light Emitting ◽  
Organic Light

Extremely low-haze light extraction from organic light-emitting diodes (OLEDs) was achieved by utilizing nanoscale corrugation, which was simply fabricated with plasma treatment and sonication.

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