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Organic thin film transistors, owing to their low-costs fabrication process and potential to be devised on flexible substrate, can be used for varied applications such as radio frequency identification tags, flexible electronics, biosensors and integrated circuits. In this regard, the authors fabricated a pentacene organic rectifier consisting of a transistor diode and a bridge rectifier. The poly 4-vinylphenol (PVP)-based single layer, which is optimised for high current level, and polymethyl-methacrylate (PMMA)-PVP double-layer structure were compared with respect to their rectification efficiency. The electrical properties of the organic rectifier could be improved by use of the PMMA-PVP double layer as an insulator compared with a single layer of PVP. The device structure was further modified to include a diode and bridge rectifier. The rectification efficiency of the diode and bridge rectifier could be increased by 10%.
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http://iet.metastore.ingenta.com/content/journals/10.1049/mnl.2011.0094
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