Characterization of Carbon Nanotubes by optical spectra

Kaempgen, M.; Dettlaff, U.; Roth, S.

doi:10.1016/s0379-6779(02)00834-2

Cited by 13 publications

(4 citation statements)

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“…We also demonstrated a reliable application of metal nanowire TCE as a touch screen, thus creating the possibility for its application in many optoelectronic devices. The spray deposition technique is a major coating technique used in the industry, is a simple and cheap method to fabricate TCE for large area application, and can be used on almost any substrate [30,31]. It has been used previously by others to make conductive CNT films [32].…”

Section: Introductionmentioning

confidence: 99%

Large scale, highly conductive and patterned transparent films of silver nanowires on arbitrary substrates and their application in touch screens

2011

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The application of silver nanowire films as transparent conductive electrodes has shown promising results recently. In this paper, we demonstrate the application of a simple spray coating technique to obtain large scale, highly uniform and conductive silver nanowire films on arbitrary substrates. We also integrated a polydimethylsiloxane (PDMS)-assisted contact transfer technique with spray coating, which allowed us to obtain large scale high quality patterned films of silver nanowires. The transparency and conductivity of the films was controlled by the volume of the dispersion used in spraying and the substrate area. We note that the optoelectrical property, σ(DC)/σ(Op), for various films fabricated was in the range 75-350, which is extremely high for transparent thin film compared to other candidate alternatives to doped metal oxide film. Using this method, we obtain silver nanowire films on a flexible polyethylene terephthalate (PET) substrate with a transparency of 85% and sheet resistance of 33 Ω/sq, which is comparable to that of tin-doped indium oxide (ITO) on flexible substrates. In-depth analysis of the film shows a high performance using another commonly used figure-of-merit, Φ(TE). Also, Ag nanowire film/PET shows good mechanical flexibility and the application of such a conductive silver nanowire film as an electrode in a touch panel has been demonstrated.

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Section: Introductionmentioning

confidence: 99%

Large scale, highly conductive and patterned transparent films of silver nanowires on arbitrary substrates and their application in touch screens

2011

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“…[6][7][8][9][10][11] These alternatives, however, present severe limitations in terms of the film transparency. 12,13 Zhang et al have improved the transparency of the film by controlling the film thickness.…”

Section: Introductionmentioning

confidence: 99%

TUNING THE OPTICAL PROPERTIES OF MULTIWALL CARBON NANOTUBE THIN FILMS BY N⁺ ION BEAMS IRRADIATION

Ahmad

Liu

Husnain

et al. 2011

NANO

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Measurements of optical transmission in the visible spectral range of N + irradiated thin films of multiwall carbon nanotubes (MWCNTs) at various doses prepared by a vacuum filtration method are reported. An increase in optical transmission was observed corresponding to increase in N + ion doses. Changes in Raman spectra at different ions doses ranging from 5×10 15 ions/cm 2 to 1 × 10 17 ions/cm 2 indicate that the structure of graphene evolves from a highly ordered layer to a disordered domains. These structural changes result in a dramatic increase in the optical transmission. Additionally, the increase of optical transmission of irradiated MWCNTs thin film as a function of electrical conductivity at various doses is also discussed. The optical transmission increases in irradiated MWCNT thin films is found to be a function of defects density in MWCNTs.

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“…1) Surface coating method of CNTs has relatively simpler procedure and more applications than that of composites or laminated method to form the functional coating in spite of vulnerable to loss of adhesion. 2) Consistent studies using surface coating have applied for the improved to substitute conventional electronics such as the conductive coating on dielectric material or the transparent electrode for display system or solar cells instead of indium tin oxide (ITO) as well as to apply for newly designed systems such as the micro biological sensor or specific purposes. [3][4][5][6][7] Single-walled CNTs are more frequently used in the functional applications than multi-walled CNTs due to higher conductivity, denser and more uniform network.…”

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confidence: 99%

“…Verified many coating methods are known with appropriate procedure such as dropping, dipping of the Langmuir-Blodgett or the Langmuir-Schaefer method, spin coating, spraying, and direct filtration. [8][9][10][11][12][13][14][15] Dropping is a simplest technique to coat on substrate meanwhile weaker surface energy of polymer than acidcleaned glass or inherently hydrophilic material leads the insufficient adhesive intensity of CNTs onto surface. The drop of CNT suspension was assisted merely by the gravity and partial electro-static charge, hence intensive adhesion of CNTs as much as when using the spray blowing or the centrifugal spinning is not expected.…”

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confidence: 99%

Improvement of Carbon Nanotubes using Cryogenic Treatment

Kim¹,

Jang²,

Lee³

et al. 2007

jjap

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Characterization of Carbon Nanotubes by optical spectra

Cited by 13 publications

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Large scale, highly conductive and patterned transparent films of silver nanowires on arbitrary substrates and their application in touch screens

Large scale, highly conductive and patterned transparent films of silver nanowires on arbitrary substrates and their application in touch screens

TUNING THE OPTICAL PROPERTIES OF MULTIWALL CARBON NANOTUBE THIN FILMS BY N⁺ ION BEAMS IRRADIATION

Improvement of Carbon Nanotubes using Cryogenic Treatment

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Characterization of Carbon Nanotubes by optical spectra

Cited by 13 publications

References 0 publications

Large scale, highly conductive and patterned transparent films of silver nanowires on arbitrary substrates and their application in touch screens

Large scale, highly conductive and patterned transparent films of silver nanowires on arbitrary substrates and their application in touch screens

TUNING THE OPTICAL PROPERTIES OF MULTIWALL CARBON NANOTUBE THIN FILMS BY N+ ION BEAMS IRRADIATION

Improvement of Carbon Nanotubes using Cryogenic Treatment

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TUNING THE OPTICAL PROPERTIES OF MULTIWALL CARBON NANOTUBE THIN FILMS BY N⁺ ION BEAMS IRRADIATION