Transparent carbon nanotube coatings

Kaempgen, M.; Duesberg, Georg S.; Roth, S.

doi:10.1016/j.apsusc.2005.01.020

Cited by 396 publications

(321 citation statements)

References 33 publications

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“…However, for the film thicknesses above 100 nm, SWNTs layers are more transparent than MWNTs [89,90]. For example, 50 nm thick films of SWNT with electrical resistivity of 30 Ω/sq has transmittance >70% in the visible part of the solar spectra and >90% at 2 µm in the near-IR [7].…”

Section: Figure 2 (From Ref [83]) Sheet Resistance Increase Of Swntmentioning

confidence: 99%

“…The SWNT films prepared [77] from aqueous solutions using surfactants facilitate maximum mechanical flexibility together with solution processablity at room temperature also on polymer substrates [77,93]. CNT coated plastic foil shows the surface resistivity of 100 Ω/m -2 and transmittance of 97 % as compared with ITO coatings on plastic with the surface resistivity between 5-15 Ω/m -2 at 72-78 % transmittance [90]. After bending up to 1 mm of the curvature radius, a CNT based device had a performance drop of 20-25 %, which could be restored by a simple heat treatment [93].…”

Section: Figure 2 (From Ref [83]) Sheet Resistance Increase Of Swntmentioning

confidence: 99%

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Carbon nanotubes for organic/inorganic hybrid solar cells

Arici

Karazhanov

2016

Materials Science in Semiconductor Processing

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Section: Figure 2 (From Ref [83]) Sheet Resistance Increase Of Swntmentioning

confidence: 99%

Section: Figure 2 (From Ref [83]) Sheet Resistance Increase Of Swntmentioning

confidence: 99%

Carbon nanotubes for organic/inorganic hybrid solar cells

Arici

Karazhanov

2016

Materials Science in Semiconductor Processing

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“…T Solar is calculated by integrating the product of the spectrally resolved transmittance with the spectrally resolved AM1.5 photon flux over the wavelength range λ ) 400-800 nm. failure when bending the substrate, the optical and electrical properties of CNT meshes [8][9][10][11][12] so far have been inferior to that of ITO, as shown in Figure 1 (open triangles). The relatively high sheet resistance of CNT meshes is attributed to a high tube-tube contact resistance between CNTs.…”

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confidence: 99%

Solution-Processed Metal Nanowire Mesh Transparent Electrodes

et al. 2008

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Transparent conductive electrodes are important components of thin-film solar cells, light-emitting diodes, and many display technologies. Doped metal oxides are commonly used, but their optical transparency is limited for films with a low sheet resistance. Furthermore, they are prone to cracking when deposited on flexible substrates, are costly, and require a high-temperature step for the best performance. We demonstrate solution-processed transparent electrodes consisting of random meshes of metal nanowires that exhibit an optical transparency equivalent to or better than that of metal-oxide thin films for the same sheet resistance. Organic solar cells deposited on these electrodes show a performance equivalent to that of devices based on a conventional metal-oxide transparent electrode.

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“…These are known to be stable under flexing 7 and can be spray cast 8 , opening the way to large area deposition. While polymer 9 and graphene [10][11][12][13][14][15] films have been studied, the most common material used to date has been carbon nanotubes 7,8,[16][17][18][19][20][21][22][23][24][25][26][27] . While the cost associated with nanotubes is still a factor, it is expected to come down as demand increases to industrial levels.…”

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confidence: 99%

Silver Nanowire Networks as Flexible, Transparent, Conducting Films: Extremely High DC to Optical Conductivity Ratios

et al. 2009

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We have used aqueous dispersions of silver nanowires to prepare thin, flexible, transparent, conducting films. The nanowires are of length and diameter close to 6.5 µm and 85 nm respectively. At low thickness, the films consist of networks but appear to become bulk-like for mean film thicknesses above ~160 nm. These films can be very transparent with optical transmittance reaching as high as 92% for low thickness. The transmittance (550 nm) decreases with increasing thickness, consistent with an optical conductivity of 6472 S/m. The films are also very uniform; the transmittance varies spatially by typically <2%. The sheet resistance decreases with increasing thickness, falling below 1 Ω/ for thicknesses above 300 nm. The DC conductivity increases from 2×10 5 S/m for very thin films before saturating at 5×10 6 S/m for thicker films.Similarly, the ratio of DC to optical conductivity increases with increasing thickness from 25 for the thinnest films, saturating at ~500 for thicknesses above ~160 nm. We believe this is the highest conductivity ratio ever observed for nanostructured films and is matched only by doped metal oxide films. These nanowire films are electromechanically very robust, with all but the thinnest films showing no change in sheet resistance when flexed over >1000 cycles. Such results make these films ideal as replacements for indium tin oxide as transparent electrodes. We have prepared films with optical transmittance and sheet resistance of 85% and 13 Ω/ respectively. This is very close to that displayed by commercially available indium tin oxide.

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Transparent carbon nanotube coatings

Cited by 396 publications

References 33 publications

Carbon nanotubes for organic/inorganic hybrid solar cells

Carbon nanotubes for organic/inorganic hybrid solar cells

Solution-Processed Metal Nanowire Mesh Transparent Electrodes

Silver Nanowire Networks as Flexible, Transparent, Conducting Films: Extremely High DC to Optical Conductivity Ratios

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