CUED Publications database

A Compact SPICE Model for Organic TFTs and Applications to Logic Circuit Design

Valletta, A and Demirkol, AS and Maira, G and Frasca, M and Vinciguerra, V and Occhipinti, LG and Fortuna, L and Mariucci, L and Fortunato, G (2016) A Compact SPICE Model for Organic TFTs and Applications to Logic Circuit Design. IEEE Transactions on Nanotechnology, 15. pp. 754-761.

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Abstract

This work introduces a compact DC model developed for organic thin film transistors (OTFTs) and its SPICE implementation. The model relies on a modified version of the gradual channel approximation that takes into account the contact effects, occurring at nonohmic metal/organic semiconductor junctions, modeling them as reverse biased Schottky diodes. The model also comprises channel length modulation and scalability of drain current with respect to channel length. To show the suitability of the model, we used it to design an inverter and a ring oscillator circuit. Furthermore, an experimental validation of the OTFTs has been done at the level of the single device as well as with a discrete-component setup based on two OTFTs connected into an inverter configuration. The experimental tests were based on OTFTs that use small molecules in binder matrix as an active layer. The experimental data on the fabricated devices have been found in good agreement with SPICE simulation results, paving the way to the use of the model and the device for the design of OTFT-based integrated circuits.

Item Type: Article
Uncontrolled Keywords: flexible electronics organic thin film transistors SPICE modeling
Subjects: UNSPECIFIED
Divisions: UNSPECIFIED
Depositing User: Cron Job
Date Deposited: 11 Sep 2017 20:06
Last Modified: 07 Dec 2017 01:31
DOI: