Article ID Journal Published Year Pages File Type
1441898 Synthetic Metals 2012 8 Pages PDF
Abstract

The electronic charge transport of thin film transistors (TFTs) based on pentacene and zinc oxide semiconductors was studied. A mathematical model is presented based on the variable range hopping (VRH) transport theory. Using the VRH model, the expression of source drain current is established under dark and under UV illumination (365 nm) in linear regime for drain bias VD = − 2 V and 2 V, when we used pentacene and zinc oxide, respectively, at 300 K. All electrical key parameters of TFTs based on pentacene and zinc oxide were extracted. A good agreement between theoretical model and experimental measurement, transfer characteristics was obtained under dark and UV illumination conditions. Finally, we give a simple small-signal equivalent circuit to the organic and inorganic thin film transistor.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► A mathematical model is presented based on the variable range hopping (VRH) transport theory. ► Using the VRH model the expression of source drain current is established under dark and under UV illumination (365 nm). ► A good agreement between theoretical model and experimental measurement is obtained under dark and under UV illumination. ► we give a simple small-signal equivalent circuit to the thin film transistor.

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Physical Sciences and Engineering Materials Science Biomaterials
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