Manipulating the ambipolar characteristics of pentacene-based field-effect transistors

Chiu, Liang Yun; Wang, Hsin Yuan; Chou, Wei‐Yang; Tang, Fu Ching

doi:10.1039/c3tc31546k

Cited by 28 publications

(20 citation statements)

References 29 publications

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“…There have been recently reported a few donor-acceptor polymers in which both electron and hole mobilities exceeding 1 cm 2 V -1 s -1 , 15 and a pentacene ambipolar transistor whose electron and hole mobilities are 3 cm 2 V -1 s -1 . 24 However, mobilities of other small-molecule ambipolar transistors are still lower than 1 cm 2 V -1 s -1 , and the present values of 4 and 5 are one of the highest among the small-molecular ambipolar materials. 15…”

Section: Transistor Characteristicsmentioning

confidence: 75%

“…Ambipolar transport has been also achieved in some small-molecule organic semiconductors such as quinoidal oligothiophenes, [16][17][18] fullerenes, 19,20 phthalocyaniones [10][11][12]21,22 metal complexes, 23 and even pentacene. 11,24 Among these materials, µ h /µ e = 3/3 cm 2 V -1 s -1 has been reported in a pentacene ambipolar transistor, 24 but mobilities of other small-molecule ambipolar transistors are still lower than 1 cm 2 V -1 s -1 . Recently, it has been reported that even the small-molecule DPP derivatives show ambipolar performance with µ h /µ e = 0.01~0.06 cm 2 V -1 s -1 .…”

Section: Introductionmentioning

confidence: 99%

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Ambipolar Organic Field-Effect Transistors Based on Indigo Derivatives

Pitayatanakul¹,

Iijima²,

Kadoya³

et al. 2015

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In order to improve the ambipolar performance of indigo-based semiconductors, we have investigated halogen-substituted (1-4) and phenyl-substituted (5) indigo derivatives at the 5-position. We show that introduction of iodine atoms, namely 5,5'-diiodoindigo (4), leads to the strong halogen-halogen interaction (iodine-iodine interaction) that gives a significant effect on the molecular packing. Thanks to the supramolecular network coming from the extra iodine-iodine interaction, the molecules are arranged approximately perpendicular to the substrate in the thin film. This results in remarkable transistor performance of the maximum hole and electron mobilities (µh/µe) = 0.42/0.85 cm 2 V-1 s-1 , which are one of the highest among small-molecule ambipolar organic transistors. Furthermore, introducing phenyl groups, 5 improves the transistor performances up to the maximum mobilities µh/µe = 0.56/0.95 cm 2 V-1 s-1. We have found that the phenyl groups destroy the standard molecular packing of indigo to achieve a unique structure that is a hybrid of the herringbone and brickwork structures.

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Section: Transistor Characteristicsmentioning

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Ambipolar Organic Field-Effect Transistors Based on Indigo Derivatives

Pitayatanakul¹,

Iijima²,

Kadoya³

et al. 2015

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“…Because the charge transfer rates depend exponentially on reorganization energies, the reorganization energies should determine the order of magnitude of charge carrier mobilities. For famous pentacene, which shows intrinsic ambipolar transport properties with charge carrier mobilities l e /l h = 2.7/2.9 cm 2 V À1 s À1 [53], its hole and electron reorganization energies are only 93 meV and 131 meV at the same DFT computational level (see Table S1 in Supporting information). So, the large reorganization energies should be one of the main limitations for charge carrier mobilities of indigo or its derivatives and their performance can not be enhanced greatly before this problem solved.…”

Section: Molecular Properties For Indigo and Its Substituent Derivativesmentioning

confidence: 99%

Rational design of bio-inspired high-performance ambipolar organic semiconductor materials based on indigo and its derivatives

Zhang

Chen

Fan

et al. 2015

Organic Electronics

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“…The βphase, however, is difficult to form directly [21] . Recently, it was found that β-phase can be directly produced from α-phase in PVDF by incorporating CNTs into the PVDF matrix [21,22] . Moreover, CNTs have also been pointed to improve the mechanical and thermal properties of PVDF [23,24] .…”

Section: Introductionmentioning

confidence: 99%

Investigation of the dielectric, mechanical, and thermal properties of noncovalent functionalized MWCNTs/polyvinylidene fluoride (PVDF) composites

Nan

Liu

2016

Polym. Adv. Technol.

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To improve the dispersion of multi‐walled walled carbon nanotubes (MWCNTs) and investigate the effect of dispersant for MWCNTs functionalization on the dielectric, mechanical, and thermal properties of Polyvinylidene fluoride (PVDF) composites, two different dispersants (Chitosan and TritonX‐100) with different dispersion capability and dielectric properties were used to noncovalently functionalize MWCNTs and prepare PVDF composites via solution blending. Fourier transform infrared, X‐Ray diffraction, and Raman spectroscopy indicated that TritonX‐100 and Chitosan were noncovalent functionalized successfully on the surface of MWCNTs. With the functionalization of Chitosan and TritonX‐100, the dispersion of MWCNTs changed in different extent, which was investigated by dynamic light scattering and confocal laser scan microscopy. The dielectric, mechanical, and thermal properties of PVDF composites were also improved. Meanwhile, it was also found that the dielectric properties of PVDF composites are closely related to the dielectric properties of dispersant. High dielectric constant of dispersant contributes to the grant dielectric constant of PVDF composites. The mechanical and thermal properties of MWCNTs/PVDF composites largely depend on the dispersion of MWCNTs in PVDF, interfacial interactions and the residual solvent. Copyright © 2016 John Wiley & Sons, Ltd.

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Manipulating the ambipolar characteristics of pentacene-based field-effect transistors

Cited by 28 publications

References 29 publications

Ambipolar Organic Field-Effect Transistors Based on Indigo Derivatives

Ambipolar Organic Field-Effect Transistors Based on Indigo Derivatives

Rational design of bio-inspired high-performance ambipolar organic semiconductor materials based on indigo and its derivatives

Investigation of the dielectric, mechanical, and thermal properties of noncovalent functionalized MWCNTs/polyvinylidene fluoride (PVDF) composites

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