4, we expect some of the channelelectrode connections to be poor which can cause the occurrence of outliers in measurements not ideally resolvable through the approximation of the channel cross-section. From the general shape of the channels shown in Fig. Electrical conductivities of such inkjet printed channels estimated by cross-sectional profile measurements to factor in variable channel profiles by linearly approximating them (red dotted lines) using multiple cross-sectional profile measurements (along yellow dashed lines) (Bruker DEKTAK XT). Printing across material surfaces with dissimilar surface energies (glass and silver) causes differential wetting of surfaces, resulting in dissimilar channel profiles as shown in Fig. Higher contact resistance for inkjet-printed silver electrodes can beĮxplained in terms of their relatively poor surface properties at electrode edge thatĬan cause small pentacene molecule grain or slight oxidation of surface during the cm for inkjet-printed and evaporated silver electrodes,.The same bottom-contact OTFT withĮvaporated silver S/D electrodes was also fabricated for reference. OnĪ common gate electrode, S/D electrodes with various channel length from 15 to 111 Gate and S/D electrodes, gate dielectric layer and semiconductor layer, respectively. Inkjet-printed silver electrodes, spin-coated PVP and evaporated pentacene were used as
Organic thin-film transistors (OTFTs) using transmission line method (TLM). Silver source–drain (S/D) electrodes and organic semiconductor layer in bottom-contact In this paper, we report contact resistance analysis between inkjet-printed
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