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  • Title: Transistor application of alkyl-substituted picene.
    Author: Okamoto H, Hamao S, Goto H, Sakai Y, Izumi M, Gohda S, Kubozono Y, Eguchi R.
    Journal: Sci Rep; 2014 May 23; 4():5048. PubMed ID: 24854436.
    Abstract:
    Field-effect transistors (FETs) were fabricated with a thin film of 3,10-ditetradecylpicene, picene-(C14H29)2, formed using either a thermal deposition or a deposition from solution (solution process). All FETs showed p-channel normally-off characteristics. The field-effect mobility, μ, in a picene-(C14H29)2 thin-film FET with PbZr0.52Ti0.48O3 (PZT) gate dielectric reached ~21 cm2 V(-1) s(-1), which is the highest μ value recorded for organic thin-film FETs; the average μ value (<μ>) evaluated from twelve FET devices was 14(4) cm2 V(-1) s(-1). The <μ> values for picene-(C14H29)2 thin-film FETs with other gate dielectrics such as SiO2, Ta2O5, ZrO2 and HfO2 were greater than 5 cm2 V(-1) s(-1), and the lowest absolute threshold voltage, |Vth|, (5.2 V) was recorded with a PZT gate dielectric; the average |Vth| for PZT gate dielectric is 7(1) V. The solution-processed picene-(C14H29)2 FET was also fabricated with an SiO2 gate dielectric, yielding μ=3.4×10(-2) cm2 V(-1) s(-1). These results verify the effectiveness of picene-(C14H29)2 for electronics applications.
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