Characteristics of Organic Light Emitting Diodes with Vanadium Oxide Solution-Treated Indium Tin Oxide
The effect of indium tin oxide (ITO) in organic light emitting diodes (OLEDs) treated by vanadium penoxide (V2O5) saturation solution was studied. The device with ITO treated by ultraviolet-ozone (UV-ozone) was fabricated in the same run for comparison. It was found that the V2O5 solution-treated devices have much higher current efficiency compared to the device with bare ITO and UV-ozone-treated ITO as the anode. The turn-on voltages were reduced by around 2.5 V, and the luminances were about 1.69 times greater than that of the conventional device at 16 V driving voltage. Series resistances were determined by the slope of the current–voltage curve and the ac impedance spectroscopy technique.
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Document Type: Research Article
Publication date: 2011-11-01
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