Effects of gate dielectrics and their solvents on characteristics of solution-processed N-channel polymer field-effect transistors

In this study, we investigated the effects of polymer gate dielectrics and their solvents on the characteristics of n-channel top-gate-structured organic field-effect transistors (OFETs) that used poly{[N,N-9-bis(2-octyldodecyl)-naphthalene-1,4,5,8-bis(dicarboximide)-2,6-diyl]-alt-5,59-(2,29-bithiophene)} (P(NDI2OD-T2)) (ActivInk™ N2200). The characteristics of P(NDI2OD-T2)-based OFETs are strongly dependent on the chemical properties of the polymer gate dielectrics used and the morphology of the semiconductor–dielectric interface, which is dependent of the dielectric solvent used for dielectric-layer deposition. Both spin-coated and inkjet-printed P(NDI2OD-T2)-based FETs exhibited reasonably high values of field-effect mobility (μFET) at 0.1–0.3 cm2 V−1 s−1 with poly(methyl methacrylate) as the gate dielectric and a number of carefully selected orthogonal solvents. The value of μFET decreased to 0.03 cm2 V−1 s−1 for a solvent with poor orthogonality (1,2-dichloroethane). This was due to the semiconductor–dielectric interface being rough owing to the dissolution and/or swelling of the underlying P(NDI2OD-T2) layer. In addition, the value of μFET decreased dramatically, to 0.005 cm2 V−1 s−1, with poly(4-vinyl phenol) (PVP) as the dielectric material, dissolved in a perfectly orthogonal solvent (1-butanol). This was due to electron trapping by the hydroxyl groups in PVP.

[1]  Henning Sirringhaus,et al.  Device Physics of Solution‐Processed Organic Field‐Effect Transistors , 2005 .

[2]  Richard H. Friend,et al.  General observation of n-type field-effect behaviour in organic semiconductors , 2005, Nature.

[3]  Tobin J Marks,et al.  Gate dielectric chemical structure-organic field-effect transistor performance correlations for electron, hole, and ambipolar organic semiconductors. , 2006, Journal of the American Chemical Society.

[4]  H. Sirringhaus,et al.  High-Resolution Ink-Jet Printing of All-Polymer Transistor Circuits , 2000, Science.

[5]  Hyun-Yong Lee,et al.  Organic Non‐Volatile Memory Based on Pentacene Field‐Effect Transistors Using a Polymeric Gate Electret , 2006 .

[6]  T. Someya,et al.  Stretchable active-matrix organic light-emitting diode display using printable elastic conductors. , 2009, Nature materials.

[7]  Ping Liu,et al.  High-performance semiconducting polythiophenes for organic thin-film transistors. , 2004, Journal of the American Chemical Society.

[8]  Katharine Sanderson,et al.  Display of flexibility , 2007, Nature.

[9]  A. Arias,et al.  Materials and applications for large area electronics: solution-based approaches. , 2010, Chemical reviews.

[10]  G. Gelinck,et al.  Flexible active-matrix displays and shift registers based on solution-processed organic transistors , 2004, Nature materials.

[11]  Howard E. Katz,et al.  Thin-Film Organic Electronic Devices , 2009 .

[12]  Yong-Young Noh,et al.  Polymer Dielectrics and Orthogonal Solvent Effects for High‐Performance Inkjet‐Printed Top‐Gated P‐Channel Polymer Field‐Effect Transistors , 2011 .

[13]  A. Facchetti,et al.  A high-mobility electron-transporting polymer for printed transistors , 2009, Nature.

[14]  Maxim Shkunov,et al.  Liquid-crystalline semiconducting polymers with high charge-carrier mobility , 2006, Nature materials.

[15]  Yong-Young Noh,et al.  High-photosensitivity p-channel organic phototransistors based on a biphenyl end-capped fused bithiophene oligomer , 2005 .

[16]  John E Anthony,et al.  Functionalized acenes and heteroacenes for organic electronics. , 2006, Chemical reviews.

[17]  Henning Sirringhaus,et al.  Analysis of the contact resistance in staggered, top-gate organic field-effect transistors , 2007 .

[18]  Yong-Young Noh,et al.  Downscaling of self-aligned, all-printed polymer thin-film transistors. , 2007, Nature nanotechnology.

[19]  Erik van Veenendaal,et al.  A 13.56-MHz RFID System Based on Organic Transponders , 2006, IEEE Journal of Solid-State Circuits.

[20]  Mario Caironi,et al.  Quantum-chemical insights into the prediction of charge transport parameters for a naphthalenetetracarboxydiimide-based copolymer with enhanced electron mobility. , 2011, Journal of the American Chemical Society.

[21]  Iain McCulloch,et al.  Progress and Challenges in Commercialization of Organic Electronics , 2008 .

[22]  Yong-Young Noh,et al.  Ultra-thin polymer gate dielectrics for top-gate polymer field-effect transistors , 2009 .