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Modeling of Polycrystalline Organic Thin-Film Transistor and Schottky Diode for the Design of Simple Functional Blocks

Published online by Cambridge University Press:  17 May 2011

M. Raja ,
D. Donaghy ,
R. Myers  and
W. Eccleston
M. Raja
Affiliation:
Organic Electronics Group, Department of Electrical Engineering & Electronics, University of Liverpool, Brownlow Hill, L69 3GJ. UK
D. Donaghy
Affiliation:
Organic Electronics Group, Department of Electrical Engineering & Electronics, University of Liverpool, Brownlow Hill, L69 3GJ. UK
R. Myers
Affiliation:
Organic Electronics Group, Department of Electrical Engineering & Electronics, University of Liverpool, Brownlow Hill, L69 3GJ. UK
W. Eccleston
Affiliation:
Organic Electronics Group, Department of Electrical Engineering & Electronics, University of Liverpool, Brownlow Hill, L69 3GJ. UK
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Abstract

We present analytical models for organic thin film transistors (OTFTs) and Schottky diodes based on polycrystalline semiconductors. The OTFT model is developed using a well-established approach previously developed for polysilicon, with slight modification for organics. The model predicts voltage and temperature dependencies on the various device and circuit parameters. A good agreement is obtained with experimental data of TIPS-based OTFTs. Essential parameters such as the characteristic temperature and Meyer-Neldel Energy extracted using the model with TIPS OTFTs data were in agreement with those obtained from Schottky diode measurements.

Keywords

organicdeviceselectrical properties

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