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- W2141895611 abstract "Electrical characteristics of organic light-emitting diodes were investigated by varying a hole-size in evaporation boat in the device structure of ITO/tris(8-hydroxyquinoline) aluminum/Al. The device was manufactured using a thermal evaporation under a base pressure of Torr. The emitting organics were evaporated to be a thickness of 100 nm at a deposition rate of . A cylindrical-shaped evaporation boat was made out of stainless steel with a small size of hole on top of the boat. Several evaporation boats were made having a different hole size on top; 0.8 mm, 1.0 mm, 1.5 mm, and 3.0 mm. We found that when the hole size on top of the evaporation boat is 1.0 mm, the average roughness is rather smoother compared to the other ones. Also, luminance and external quantum efficiency are superior to the others. Compared to the ones from the devices made with the hole-size of 0.8 mm boat. The luminance and external quantum efficiency of the device made with the hole-size of 1.0 mm boat were improved by a factor of seventy and thirty three, respectively. Also operating voltage is reduced to 2 V." @default.
- W2141895611 created "2016-06-24" @default.
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- W2141895611 date "2008-06-30" @default.
- W2141895611 modified "2023-09-24" @default.
- W2141895611 title "Electrical Characteristics of Organic Light-emitting Diodes Fabricated by Varying a Hole-size in Evaporation Boat" @default.
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- W2141895611 doi "https://doi.org/10.4313/teem.2008.9.3.105" @default.
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