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Non-functionalized soluble diketopyrrolopyrrole: Simplest p-channel core for organic field-effect transistors

Title
Non-functionalized soluble diketopyrrolopyrrole: Simplest p-channel core for organic field-effect transistors
Authors
Palai, AK[Palai, Akshaya K.]Cho, H[Cho, Hyejin]Cho, S[Cho, Sungwoo]Shin, TJ[Shin, Tae Joo]Jang, S[Jang, Soonmin]Park, SU[Park, Seung-Un]Pyo, S[Pyo, Seungmoon]
DGIST Authors
Cho, S[Cho, Sungwoo]
Issue Date
2013-05
Citation
Organic Electronics: physics, materials, applications, 14(5), 1396-1406
Type
Article
Article Type
Article
Keywords
Atomic Force MicroscopyCyclic VoltammetryDensity Functional TheoryDensity Functional Theory CalculationsDiketopyrrolopyrroleDiketopyrrolopyrrolesField-Effect MobilitiesFluorescence SpectroscopyFunctionalizationsGate DielectricsOrganic Electronic DevicesOrganic Field-Effect Transistor (OFETs)Organic Field-Effect TransistorsOrganic MicrowireOrganic SemiconductorPoly(4-Vinylphenol)Polymer DielectricPolymer DielectricsSemiconducting Organic CompoundsThermoanalysisX Ray Diffraction
ISSN
1566-1199
Abstract
We report the synthesis, characterization and behavior in field-effect transistors of non-functionalized soluble diketopyrrolopyrrole (DPP) core with only a solubilizing alkyl chain (i.e. -C16H33 or -C 18H37) as the simplest p-channel semiconductor. The characteristics were evaluated by UV-vis and fluorescence spectroscopy, X-ray diffraction, cyclic voltammetry (CV), thermal analysis, atomic force microscopy (AFM) and density functional theory (DFT) calculation. For top-contact field-effect transistors, two types of active layers were prepared either by a solution process (as a 1D-microwire) or thermal vacuum deposition (as a thin-film) on a cross-linked poly(4-vinylphenol) gate dielectric. All the devices showed typical p-channel behavior with dominant hole transports. The device made with 1D-microwiress of DPP-R18 showed field-effect mobility in the saturation region of 1.42 × 10-2 cm2/V s with I ON/IOFF of 1.82 × 103. These findings suggest that the non-functionalized soluble DPP core itself without any further functionalization could also be used as a p-channel semiconductor for low-cost organic electronic devices.© 2013 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/20.500.11750/3241
DOI
10.1016/j.orgel.2013.03.002
Publisher
Elsevier B.V.
Files:
There are no files associated with this item.
Collection:
Center for Core Research Facilities1. Journal Articles


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