Polymeric Thin Film Transistors Modeling in the Presence of Non-Ohmic Contacts

Magali Estrada del Cueto (), Antonio Cerdeira Altuzarra (), Benjamín Iñiguez Nicolau (), Lluis F. Marsal Garvi () and Josep Pallarés Marzal ()
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Magali Estrada del Cueto: Electrical Engineering Department
Antonio Cerdeira Altuzarra: Electrical Engineering Department
Benjamín Iñiguez Nicolau: Universitat Rovira i Virgili, Department of Electronic, Electric and Automation Engineering
Lluis F. Marsal Garvi: Universitat Rovira i Virgili, Department of Electronic, Electric and Automation Engineering
Josep Pallarés Marzal: Universitat Rovira i Virgili, Department of Electronic, Electric and Automation Engineering

Chapter Chapter 12 in Mathematical Modeling and Computational Intelligence in Engineering Applications, 2016, pp 171-179 from Springer

Abstract: Abstract This chapter discusses a model for polymeric thin film transistors, PTFTs, based on the unified model and parameter extraction method (UMEM), previously developed by these authors for thin film transistors, which includes specific features of OTFTs, as initial drain current and subthreshold behavior. In this case, the model shows the presence of non-ohmic contacts at drain and source. UMEM, has been previously used with a-Si:H, polysilicon and nanocrystalline TFTs and as compared with previous methods, it provides a more rigorous and accurate determination of the main electrical parameters of TFTs. Device parameters are extracted in a simple and direct way from the experimental measurements, with no need for assigning predetermined values to any model parameter or using optimization methods. In this case, the extraction procedure is complemented to include the extraction of the model parameters related to the non-ohmic contacts at drain and source. The model was implemented in Verilog-A and included for application in Spice simulators. Good consistency was found between the simulations in Spice using the model and the measured devices, as shown herein.

Keywords: Thin film transistors; Series resistance; Polymeric transistors; Non-ohmic contacts; Compact modeling; OTFTs; Series resistance extraction (search for similar items in EconPapers)
Date: 2016
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-3-319-38869-4_12

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DOI: 10.1007/978-3-319-38869-4_12

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