Photoconductivity of Single‐Bilayer Nanotubes Consisting of Poly(<i>p</i>‐phenylenevinylene) (PPV) and Carbonized‐PPV Layers

Kim, Kyungkon; Kim, Bo H.; Joo, Sung Hoon; Park, Jong Sang; Joo, Jinsoo; Jin, Jung Il

doi:10.1002/adma.200400977

Cited by 25 publications

(24 citation statements)

References 33 publications

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“…To date, there have been relatively few reports on photoconductivity in 1D polymer nanostructures; for example, Kim and coworkers have reported photoconductance in single bilayer nanotubes comprising poly-(p-phenylenevinylene) (PPV) nanotube cores and carbonized PPV outer shells. [21] However, in this work, we present photoconductivity measurements of F8T2 nanowire devices, which yield single-nanowire responsivities of approximately 0.4 mAW -1 and external quantum efficiencies of approximately 0.1 % under monochromatic illumination; these values are comparable with data reported for single-inorganic-nanowire devices. Our results demonstrate the promise of these novel nanostructures as ultraminiature photodetectors with the potential for integration into future hybrid nanophotonic devices and systems.…”

supporting

confidence: 72%

A Single Polymer Nanowire Photodetector

O'Brien¹,

Quinn²,

Tanner³

et al. 2006

Advanced Materials

215

178

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Semiconducting nanowires and nanotubes are an emerging class of 1D nanostructures that represent attractive building blocks for nanoscale electronic and photonic devices. For example, inorganic semiconductor nanowires [1][2][3] and carbon nanotubes, [4] show great promise for nanoelectronic devices and integrated nanosystems because they can function both as device components for logic, memory, and sensing applications and also as interconnects. Inorganic semiconductor nanowires are also attracting increasing research interest as building blocks for integrated nanophotonic systems, since they can function as subwavelength optical waveguides, emissive devices, and photodetectors. [1][2][3][5][6][7][8][9][10][11][12] With respect to the latter, photoconductance measurements have recently been reported for a range of single inorganic nanowire devices: InP, [5] ZnO, [6] GaN, [7] and Si, [8] as well as for carbon-nanotube devices.[13]While inorganic nanowires and carbon nanotubes have been explored in depth, the challenge of controlled fabrication of 1D nanostructures based on organic molecular materials suitable for integrated (opto)electronic applications has yet to be as comprehensively addressed. In particular, semiconducting polymers are attractive materials due to their chemically tunable optical and electronic properties, as well as their facility for solution processing. [14,15] 1D nanostructures fabricated from such polymers have been the subject of recent research with regard to their physical, chemical, electronic, and photonic properties. [16][17][18][19][20] However, demonstration of viable polymer nanowire technologies will require the development of reliable methods for the production of such structures with good control over critical parameters such as diameter, length, morphology, and chemical composition. Recently, a new method for the formation of organic nanotubes and nanowires through the wetting of porous anodized alumina membranes has been reported. [20] This method of template wetting using solution-based or molten material does not require specialized apparatus and is broadly applicable across a wide range of organic materials, including small molecules, oligomers, polymers, blends, and multicomponent solutions.[20]In this work, we demonstrate that solution-assisted template wetting may be successfully exploited for high-yield controlled synthesis of poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(bithiophene)] (F8T2) nanowires. Following liberation from the template and dispersion, our method produces discrete nanowires with average lengths of 15 lm and mean diameters of 200 nm. We report on the electrical characteristics of singlenanowire devices and, further, on the use of single F8T2 nanowires in photoconductivity-based photodetectors. To date, there have been relatively few reports on photoconductivity in 1D polymer nanostructures; for example, Kim and coworkers have reported photoconductance in single bilayer nanotubes comprising poly-(p-phenylenevinylene) (PPV) nanotube cores and carbonized PP...

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supporting

confidence: 72%

A Single Polymer Nanowire Photodetector

O'Brien¹,

Quinn²,

Tanner³

et al. 2006

Advanced Materials

215

178

View full text Add to dashboard Cite

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“…[ 8,22 ] In order to tackle these issues, several strategies have been explored, such as decoration of photoactive molecules to extend and enhance the photon adsorption as well as the fabrication of uniform composite structures to promote charge transport and wavelength selectivity. [23][24][25][26] Notably, the combination of plasmonic nanoparticles (e.g., Au or Ag nanomaterials) with conductive polymer shows a signifi cant improvement in visible range, since plasmonic nanoparticles can effectively enhance the visible light absorption due to the electromagnetic fi eld by local surface plasmon resonance (LSPR) excitation. [27][28][29][30][31][32][33] By modulating the size, shape, and the amount of loading of plasmonic nanoparticles, photo conduction effi ciency of the conductive polymer combined deposited on the top of the substrate as resist layer by a spincoating technique.…”

Section: Doi: 101002/adma201505876mentioning

confidence: 99%

Enhanced Photoresponse of Conductive Polymer Nanowires Embedded with Au Nanoparticles

et al. 2016

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A conductive polymer nanowire embedded with a 1D Au nanoparticle chain with defined size, shape, and interparticle distance is fabricated which demonstrates enhanced photoresponse behavior. The precise and controllable positioning of 1D Au nanoparticle chain in the conductive polymer nanowire plays a critical role in modulating the photoresponse behavior by excitation light wavelength or power due to the coupled-plasmon effect of 1D Au nanoparticle chain.

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“…We have recently reported [3][4][5] the facile preparation of PPV by a chemical vapor deposition polymerization (CVDP) method, where 1,4-bis(chloromethyl)benzene was vaporized in an inert gas such as argon, and the vaporized monomer was passed through a hot zone (600-850°C) to prepare an activated intermediate. This intermediate was polymerized on a surface to prepare thin films, tubes, rods, and fibers.…”

Section: Introductionmentioning

confidence: 99%

“…This synthetic method was described earlier by European groups [7,8] and also reviewed by Greiner et al [9] The fact that the PPV prepared by this method could be easily carbonized to graphitic carbon made this approach very attractive. [5,10] We have prepared wellaligned graphitic carbon nanotubes [3] exhibiting high fieldemission properties [10] and bilayer nanotubes and nanofilms consisting of carbonized PPV and PPV layers displaying highly efficient photoconductivity values. [5,11] Recently, we have also successfully prepared poly(thienylenevinylene) via the same CVDP method by using 2,5-bis(chloromethyl)thiophene as the starting material.…”

Section: Introductionmentioning

confidence: 99%

Thin Films of Insoluble Poly(Oligothienylene vinylenes) Prepared by Chemical Vapor Deposition Polymerization

Joo

Lee

Park

et al. 2007

Adv Funct Materials

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A series of poly(oligothienylene vinylenes) (PTmVs, m = 2–4) with a varying number of consecutively bound thienylene rings are successfully prepared in thin films by chemical vapor deposition polymerization (CVDP) using the corresponding bis(halomethyl)thiophenes as starting materials. The chemical and electronic structures are studied spectroscopically and also by cyclic voltammetry. Top‐gate field‐effect transistors are fabricated by two consecutive CVDP cycles of PTmV and poly(p‐xylylene) followed by the deposition of a Au gate electrode. In the case of a PT3V active layer, a field‐effect mobility value of 0.5 × 10–4 cm2 V–1 s–1 is obtained.

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Photoconductivity of Single‐Bilayer Nanotubes Consisting of Poly(p‐phenylenevinylene) (PPV) and Carbonized‐PPV Layers

Cited by 25 publications

References 33 publications

A Single Polymer Nanowire Photodetector

A Single Polymer Nanowire Photodetector

Enhanced Photoresponse of Conductive Polymer Nanowires Embedded with Au Nanoparticles

Thin Films of Insoluble Poly(Oligothienylene vinylenes) Prepared by Chemical Vapor Deposition Polymerization

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