A method of printing carbon nanotube thin films

Zhou, Yuliang; Hu, Liangbing; Grüner, G.

doi:10.1063/1.2187945

Cited by 411 publications

(396 citation statements)

References 14 publications

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“…The AAO membrane and PDMS mask containing the BPE-PTCDI MW patterns were then inverted on a substrate with a hydrophobic surface, such as a SiO 2 wafer treated with n-octadecyl triethoxysilane [C 18 H 37 Si(OC 2 H 5 ) 3 (OTS)]. The hydrophobic BPE-PTCDI MWs were readily transferred from the hydrophilic surface of the AAO membrane to the OTS-treated SiO 2 substrate in water, presumably due to hydrophobic interactions between the MWs and OTS surface and surface energy difference between AAO membrane and OTS (37). Pulling the stacked layers out of deionized water resulted in a clean transfer of hydrophobic BPE-PTCDI MWs onto the hydrophobic OTStreated SiO 2 surface.…”

Section: (See Materials and Methods)mentioning

confidence: 99%

“…Pulling the stacked layers out of deionized water resulted in a clean transfer of hydrophobic BPE-PTCDI MWs onto the hydrophobic OTStreated SiO 2 surface. Filtration methods have been reported for the preparation of carbon nanotube (37,44) and graphene (45) films. However, those methods only produced randomly oriented networks.…”

Section: (See Materials and Methods)mentioning

confidence: 99%

“…Therefore, the technology to achieve network films of organic MWs deposited from a dispersion with controlled alignment and density is acutely desired. The integration of inorganic and metallic wires into functional network films has been extensively explored by using a number of methods such as the flow cell method (26), electric field (27, 28), magnetic field (29), electrospinning (30), chemical and biological surface-directed patterning (31, 32), Langmuir-Blodgett technique (33, 34), transfer-printing (35,36,37), and the blownbubble method (38). Compared with their inorganic counterparts, however, organic wires are typically mechanically less robust, electromagnetically less active, and broader in size distribution; hence, the aforementioned alignment techniques cannot easily be applied to them.…”

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confidence: 99%

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Solution-processed, high-performance n-channel organic microwire transistors

Oh¹,

Lee²,

Mannsfeld³

et al. 2009

Proc. Natl. Acad. Sci. U.S.A.

222

197

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The development of solution-processable, high-performance nchannel organic semiconductors is crucial to realizing low-cost, all-organic complementary circuits. Single-crystalline organic semiconductor nano/microwires (NWs/MWs) have great potential as active materials in solution-formed high-performance transistors. However, the technology to integrate these elements into functional networks with controlled alignment and density lags far behind their inorganic counterparts. Here, we report a solutionprocessing approach to achieve high-performance air-stable nchannel organic transistors (the field-effect mobility ( ) up to 0.24 cm 2 /Vs for MW networks) comprising high mobility, solutionsynthesized single-crystalline organic semiconducting MWs ( as high as 1.4 cm 2 /Vs for individual MWs) and a filtration-and-transfer (FAT) alignment method. The FAT method enables facile control over both alignment and density of MWs. Our approach presents a route toward solution-processed, high-performance organic transistors and could be used for directed assembly of various functional organic and inorganic NWs/MWs. organic semiconductors ͉ single crystals ͉ solution processing ͉ alignment S olution-processable, high-performance n-channel (electrontransporting) organic semiconductors are indispensable for cost-effective production of all-organic, flexible complementary logic elements (1-3). To date, however, very few solutionprocessable, air-stable organic n-channel semiconductors matching the performance of amorphous silicon (a-Si) ( Ն 0.1 cm 2 /Vs) have been reported (4-8). Organic semiconductor nano/microwires (NWs/MWs) have recently emerged as promising building blocks for various electronic and optical applications such as light-emitting diodes (LEDs) (9), field-effect transistors (FETs) (10), photoswitches (11), vapor sensors (12), solar cells (13), nanoscale lasers (14), optical waveguides (15), and memory devices (16). These unique materials combine the high-performance of singlecrystalline structures with solution-processability by dispersion (17,18). Several p-channel (hole-transporting) organic wires prepared by solution-processing have exhibited Ͼ 0.1 cm 2 /Vs for singlewire transistors (19)(20)(21)(22), whereas only a few solution-synthesized n-channel organic wires have been reported, typically with low performance ( Ϸ10 Ϫ3 Ϫ 10 Ϫ2 cm 2 /Vs) (23,24).Despite the intrinsic high mobility of single-crystalline wires, precise wire placement and wire-to-wire performance variation, due to the difference in the contact quality at the wire/insulator and wire/electrode interfaces, substantially hinder successful device integration (10, 25). Therefore, the technology to achieve network films of organic MWs deposited from a dispersion with controlled alignment and density is acutely desired. The integration of inorganic and metallic wires into functional network films has been extensively explored by using a number of methods such as the flow cell method (26), electric field (27, 28), magnetic field (29), electrospinning (30),...

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Section: (See Materials and Methods)mentioning

confidence: 99%

Section: (See Materials and Methods)mentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Solution-processed, high-performance n-channel organic microwire transistors

Oh¹,

Lee²,

Mannsfeld³

et al. 2009

Proc. Natl. Acad. Sci. U.S.A.

222

197

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“…A 1-mm-thick transparent polydimethylsiloxane (PDMS) (Sylgard 184, Dow Corning; the mixing ratio between the polymer precursor and the curing agent was 10:1.0) layer was spread on another quartz slide and left to cure at 50 °C for 12 h [16]. After curing, the PDMS membrane was carefully peeled off the slide.…”

Section: Methodsmentioning

confidence: 99%

A mechanically tunable plasmonic structure composed of a monolayer array of metal-capped colloidal spheres on an elastomeric substrate

et al. 2010

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A highly stretchable plasmonic structure composed of a monolayer array of metal-capped colloidal spheres on an elastomeric substrate has been fabricated using simple and inexpensive self-assembly and transfer-printing techniques. This composite structure supports coupled surface plasmons whose wavelengths are sensitive to the arrangement of the metal-capped colloidal spheres. Upon stretching, the lattice of metal-capped colloidal spheres will be deformed, leading to a large wavelength shift of surface plasmon resonances and simultaneously an obvious color change. This stretchable plasmonic structure offers a promising approach to tune surface plasmon resonances and might be exploited in realizing flexible plasmonic devices with tunability of mechanical strain.

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“…[1][2][3] These transparent electrodes have been used in organic solar cells, photovoltaic devices, and light emitting diodes, which show comparable device performance with indium tin oxide ͑ITO͒, along with better mechanical properties. [4][5][6] SWCNT films are porous and have high surface area, which can be either bane or boon for the device application.…”

Section: Introductionmentioning

confidence: 99%

Modification of single-walled carbon nanotube electrodes by layer-by-layer assembly for electrochromic devices

Jain

Yochum

Montazami

et al. 2008

Journal of Applied Physics

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Articles you may be interested inEnhancement of efficiency of a conducting polymer P3HT:CdSe/ZnS quantum dots hybrid solar cell by adding single walled carbon nanotube for transporting photogenerated electrons J. Renewable Sustainable Energy 5, 033107 (2013) We have studied the morphological properties and electrochromic ͑EC͒ performance of polythiophene multilayer films on single wall carbon nanotube ͑SWCNT͒ conductive electrodes. The morphology for different numbers of layer-by-layer ͑LbL͒ bilayer on the SWCNT electrode has been characterized with atomic force microscopy and scanning electron microscope, and it was found that the LbL multilayers significantly decrease the surface roughness of the nanoporous nanotube films. The controlled surface roughness of transparent nanotube electrodes could be beneficial for their device applications. We have also fabricated EC devices with LbL films of poly͓2-͑3-thienyl͒ ethoxy-4-butylsulfonate/poly͑allylamine hydrochloride͒ on SWCNT electrodes, which not only have high EC contrast but also sustain higher applied voltage without showing any degradation for more than 20 000 cycles, which is not possible in the case of indium tin oxide electrodes. Cyclic voltammetry of the LbL films formed on SWCNT shows higher current at low potential, revealing the feasibility of SWCNT electrode as a good host for electrolyte ion insertion.

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A method of printing carbon nanotube thin films

Cited by 411 publications

References 14 publications

Solution-processed, high-performance n-channel organic microwire transistors

Solution-processed, high-performance n-channel organic microwire transistors

A mechanically tunable plasmonic structure composed of a monolayer array of metal-capped colloidal spheres on an elastomeric substrate

Modification of single-walled carbon nanotube electrodes by layer-by-layer assembly for electrochromic devices

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