Journal ArticleDOI
Effect of Dielectric Roughness on Performance of Pentacene TFTs and Restoration of Performance with a Polymeric Smoothing Layer
TLDR
The morphology, structure, and transport properties of pentacene thin film transistors (TFTs) are reported showing the influence of the gate dielectric surface roughness.Abstract:
The morphology, structure, and transport properties of pentacene thin film transistors (TFTs) are reported showing the influence of the gate dielectric surface roughness Upon roughening of the amorphous SiO2 gate dielectric prior to pentacene deposition, dramatic reductions in pentacene grain size and crystallinity were observed The TFT performance of pentacene films deposited on roughened substrates showed reduced free carrier mobility, larger transport activation energies, and larger trap distribution widths Spin coating roughened dielectrics with polystyrene produced surfaces with 2 A root-mean-square (rms) roughness The pentacene films deposited on these coated surfaces had grain sizes, crystallinities, mobilities, and trap distributions that were comparable to the range of values observed for pentacene films deposited on thermally grown SiO2 (roughness also ∼2 A rms)read more
Citations
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Journal ArticleDOI
The larger acenes: versatile organic semiconductors.
TL;DR: New approaches to add functionality were developed to improve the processability of these materials in solution, allowing the synthesis of acenes larger than pentacene, which have hitherto been largely unavailable and poorly studied.
Journal ArticleDOI
Polymers for flexible displays: From material selection to device applications
TL;DR: In this paper, the kinds of polymers that are used, where and how polymer materials are used and the challenges to overcome in developing flexible displays are discussed and discussed in detail.
Journal ArticleDOI
Semiconductors for organic transistors
TL;DR: In this article, the fundamental aspects behind the structural design/realization of p- and n-channel semiconductors for organic field effect transistors (OFETs) are discussed.
Journal ArticleDOI
Gate Dielectric Chemical Structure−Organic Field-Effect Transistor Performance Correlations for Electron, Hole, and Ambipolar Organic Semiconductors
TL;DR: Thiophene-based n-type semiconductors exhibiting similar film morphologies and microstructures on various bilayer gate dielectrics therefore provide an incisive means to probe TFT performance parameters versus semiconductor-dielectric interface relationships.
Journal ArticleDOI
Organic semiconductor growth and morphology considerations for organic thin-film transistors.
TL;DR: The goal of this Review is primarily to discuss the thin-film formation of organic semiconducting species and the patterning of single crystals is discussed, while their nucleation and growth has been described elsewhere.
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.
Journal ArticleDOI
Effect of impurities on the mobility of single crystal pentacene
TL;DR: In this article, the hole mobility for the organic conductor pentacene was obtained at room temperature and at 225 K. The number of traps was reduced by two orders of magnitude compared with conventional methods.
Journal ArticleDOI
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.
Journal ArticleDOI
Control of carrier density by self-assembled monolayers in organic field-effect transistors
S. Kobayashi,Takao Nishikawa,Takao Nishikawa,Taishi Takenobu,S. Mori,Tatsuya Shimoda,Tatsuya Shimoda,Tadaoki Mitani,Hidekazu Shimotani,Noriyuki Yoshimoto,Seishi Ogawa,Yoshihiro Iwasa +11 more
TL;DR: A new technique is discussed that enables us to control the charge density in the channel by using organosilane self-assembled monolayers (SAMs) on SiO2 gate insulators.
Journal ArticleDOI
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.