Organic Thin-Film Transistors Fabricated on Plastic Substrates with a Polymeric Gate Dielectrics

概要

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An organic thin-film transistor using pentacene as an active layer was fabricated on plastic substrate. An organic layer such as thermal curable polymer (JSS-362, Japan Synthetic Rubber (JSR)) was used as the gate dielectrics. The JSS-362 may act not only as a dielectric layer but also as a surface smoothing layer. From the electrical measurement, typical $I_{\text{D}}$-$V_{\text{D}}$ characteristics of the field-effect transistor (FET) were observed. The field effect mobility $\mu$ was calculated to be 0.12 cm2$\cdot$V-1$\cdot$s-1, while the threshold voltage $V_{\text{T}}$ was approximately $-15$ V. The on/off ratio was above $10^{4}$ when $V_{\text{G}}$ was scanned from $-75$ V to $+0$ V.
2003-05-15