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OTFTs with P3HT as organic semiconductor and HfTiO as gate dielectric have been studied in this work. The HfTiO dielectric film was prepared by RF sputtering of Hf and DC sputtering of Ti at room temperature. Subsequently, the dielectric film was annealed in an NH3 or N2 ambient at 200??C. Then a layer of OTS was deposited by spin-coating method to improve the surface characteristics of the gate dielectric...
Pentacene-based organic thin-film transistor (OTFT) with HfO2 as gate dielectric is studied in this work. The HfO2 dielectric was prepared by RF sputtering at room temperature, and subsequently annealed in N2O or NH3 at 200degC. The OTFTs were characterized by IV measurement and 1/f noise measurement. The OTFTs show small threshold voltage and can operate at as low as 3 V. Results indicate that the...
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