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Optoelectronic properties of transparent and conducting single-wall carbon nanotube thin films
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View: Figures


Image of FIG. 1.
FIG. 1.

SEM images of SWNT films with a filtrated volumes of (a) , (b) , and (c) . The SWNT concentration in the suspension was kept constant at for all the samples. The electron microscopy studies were performed on a LEO Zeiss Gemini 982 field emission scanning electron microscope (SEM) operated at .

Image of FIG. 2.
FIG. 2.

(Color online) Ellipsometric angles: (a) , (b) , (c) Starting analytic model assuming a fraction of SWNTs as a semi-infinite medium not interacting with the host medium. (d) Numeric model assuming semitransparent bundles interacting at a dipole-dipole level (EMT).

Image of FIG. 3.
FIG. 3.

(Color online) (a) Modeling parameters used to determine the dielectric response of the individual tube. (b-c) Calculated dielectric functions and of the single tube, as a function of the photon energy . Remarkable effects of confinement are the shifts of , and the appearance of the Drude background at , indicating the onset of metallic optical behavior.

Image of FIG. 4.
FIG. 4.

(Color online) Direct current electrical conductivity vs SWNT fraction in transparent conducting SWNT thin films. Data from Ref. 6, ( and ) are added, since all the samples considered in the present study are electrically percolating.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Optoelectronic properties of transparent and conducting single-wall carbon nanotube thin films