Electrical characterization of polymer-based FETs fabricated by spin-coating poly(3-alkylthiophene)s

Deen, M. Jamal, Kazemeini, Mehdi H., Haddara, Yaser M., Jianfei, Yu, Vamvounis, George, Holdcroft, Steven, and Woods, William (2004) Electrical characterization of polymer-based FETs fabricated by spin-coating poly(3-alkylthiophene)s. IEEE Transactions on Electron Devices, 51 (11). pp. 1892-1901.

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Abstract

The current-voltage (I-V) characteristics of two different polymer thin-film transistors (TFTs), based on spin-coating of poly(3-hexylthiophene)-P3HT and poly(3-hexadecylthiophene)-P3HDT, are studied. A model is developed to interpret the results and to explain the differences between these two polymers. Various parameters of the semiconducting polymers, including bulk mobility, field-effect mobility, trap density, and unintentional dopant concentration are estimated. The model takes into account the, domination of the bulk current over the channel current in the subthreshold regime as well as the effects of the depletion layer as parasitic resistances in series with the channel resistance. Furthermore, the effects of the films thickness on the electrical characteristics of these TFTs are discussed. Compared to the P3HT, the P3HDT-based TFT has a lower subthreshold slope, higher on current ratio, and higher field-effect mobility.

Item ID: 32730
Item Type: Article (Research - C1)
ISSN: 1557-9646
Keywords: charge transport, electrical characterization of PFETs, organic transisors, polymer FET (PFET), polymer transistors, polymer transistor fabrication, thin-film transistors (TFTs), transport in polymer semiconductors
Date Deposited: 22 Feb 2016 23:59
FoR Codes: 03 CHEMICAL SCIENCES > 0305 Organic Chemistry > 030505 Physical Organic Chemistry @ 100%
SEO Codes: 85 ENERGY > 8505 Renewable Energy > 850504 Solar-Photovoltaic Energy @ 100%
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