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Characteristics of Organic Light Emitting Diodes with Vanadium Oxide Solution-Treated Indium Tin Oxide

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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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Keywords: CARRIER BALANCE; IMPEDANCE SPECTROSCOPY; ORGANIC LIGHT EMITTING DIODE; VANADIUM PENTOXIDE

Document Type: Research Article

Publication date: 2011-11-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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