Journal ArticleDOI
High-field-effect-mobility pentacene thin-film transistors with polymethylmetacrylate buffer layer
TLDR
In this paper, a thin polymethylmetacrylate (PMMA) buffer layer has been employed in order to fabricate high-quality pentacene thin-film transistors (TFTs), both in bottom contact and top contact configuration.Abstract:
A thin film of polymethylmetacrylate (PMMA) acting as a buffer layer has been employed in order to fabricate high-quality pentacene thin-film transistors (TFTs), both in bottom contact and top contact configuration. A PMMA buffer layer allows to reduce the interaction between a π-conjugated system of pentacene and the metal or dielectric substrate. We show that a thin PMMA buffer layer improves crystal quality along the metal contacts’ boundaries, while still allowing good ohmic contact. Pentacene TFTs, including a PMMA buffer layer, show very high field-effect mobility, μFE=0.65 and 1.4cm2∕Vs, for bottom and top contact configuration, respectively, and remarkable steep subthreshold region.read more
Citations
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Journal ArticleDOI
Surface-Directed Molecular Assembly of Pentacene on Monolayer Graphene for High-Performance Organic Transistors
TL;DR: It is demonstrated that polymer residues remaining on graphene surfaces induce a stand-up orientation ofpentacene, thereby controlling pentacene growth such that the molecular assembly is optimal for charge transport.
Journal ArticleDOI
Organic Thin Film Transistors: Structures, Models, Materials, Fabrication, and Applications: A Review
TL;DR: In this article, the performance of p-and n-type conducting polymer and small molecule organic semiconductors are reviewed primarily in terms of field effect mobility, current on/off ratio, and operating voltage for various OTFT structures.
Journal ArticleDOI
Anisotropic field effect mobility in single crystal pentacene
J. Y. Lee,S. Roth,Yung Woo Park +2 more
TL;DR: Fan-shaped electrodes were designed on Si∕SiO2 substrate to measure the anisotropic field effect mobility in freestanding single crystal pentacene as mentioned in this paper, and the highest mobility value was estimated to be ∼2.3cm2∕Vs at room temperature.
Journal ArticleDOI
Pentacene-based organic field-effect transistors
TL;DR: In this paper, the basic properties of pentacene films and crystals, and the characteristics of Pentacene FETs fabricated under various conditions, including their recent achievement of low-voltage operating high-mobility FET, are discussed.
Journal ArticleDOI
Application of admittance spectroscopy to evaluate carrier mobility in organic charge transport materials
TL;DR: In this article, the authors examined the feasibility of admittance spectroscopy and susceptance analysis in the determination of the charge-carrier mobility in an organic material and found that the susceptance is related to the carrier transport properties of the materials.
References
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Journal ArticleDOI
High-mobility polymer gate dielectric pentacene thin film transistors
TL;DR: In this article, a spin-coated polymer gate dielectric layer was used to obtain a polyvinylphenol-based copolymer-based transistor with a carrier mobility as large as 3 cm2/V's and sub-threshold swing as low as 0.5 V/decade.
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Low-cost all-polymer integrated circuits
TL;DR: In this paper, a reproducible fabrication of field effect transistors in which the semiconducting, conducting, and insulating parts are all made of polymers is described, using spin-coating of electrically active precursors and pattern-wise exposure of the deposited films.
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Pentacene thin film transistors on inorganic dielectrics: Morphology, structural properties, and electronic transport
TL;DR: In this paper, the structural and transport properties of evaporated pentacene organic thin film transistors (TFTs) are reported, and they show the influence of the deposition conditions with different inorganic dielectrics.
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Field-effect transistors on rubrene single crystals with parylene gate insulator
TL;DR: In this paper, the organic field-effect transistors (OFETs) on the surface of single crystals of rubrene have been fabricated and the parylene polymer film has been used as the gate insulator.
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Organic electronics on paper
TL;DR: In this article, the authors fabricated organic thin-film transistors and ring oscillators on paper and on flexible polyetherether ketone film using small-molecule hydrocarbon pentacene as the semiconductor and solution-processed polyvinylphenol as the gate dielectric.