| International Journal of Advanced Applied Physics Research (Volume 1 Issue 2) |
| Numerical Simulation and Spice Modeling of Organic Thin FilmTransistors (OTFTs) |
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Pages 14-21
A.D.D. Dwivedi
DOI: http://dx.doi.org/10.15379/2408-977X.2014.01.02.3
Published: 31 December 2014 |
| Abstract |
| As organic thin film transistors are playing important role in low cost, large area and flexible integrated circuits, there is urgent need of accurate modeling and simulation of these devices with emphasis of compact modeling suitable in integrated circuit simulation using Spice like simulators. This paper presents a 2D numerical simulation of pentacene based organic thin film transistors. Also a spice model extraction methodology of OTFTs base on Silvaco's UOTFT model is presented for circuit simulation. The numerically simulated results are in good agreement with OTFT spice modeling results. The Organic TFT model is extracted from the numerically simulated data and further it is used in circuit simulation of CMOS like hybrid inverter and five stage ring oscillator circuit realized from hybrid inverter. In the hybrid inverter circuit an amorphous silicon TFT is used in place of the NMOS devices and a Pentacene based TFT is used in place of the PMOS devices. Circuit simulation results proves the applicability of the model in circuit design of organic thin film based transistors. |
| Keywords |
| Numerical simulation, OTFTs, Spice modeling, Hybrid inverter, Ring oscillator. |
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