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SEM images of SWNT films deposited on glass, from 50 ml SWNT solution (a) and 10 ml SWNT solution (b). The arrows on image (a) indicate the presence of voids that illustrate the three-dimensional nature of the coating.
Transmission spectra of the SWNT-glass samples and an ITO-PET substrate. (a) The panel (b) shows surface resistivity vs SWNT volume used for filtration coating of all the SWNT-glass samples.
Schematic of the devices with ITO (a) and SWNT thin film (b) as the anodes are shown in the upper panel. The corresponding curves at halogen white light and in the dark of reference solar cell on ITO-glass substrate and best solar cell using a SWNT-glass current collector are shown. (c) The log characteristics of the ITO and SWNT thin film devices under illumination are shown in the inset.
Energy level diagram adjusted in relation to the vacuum level for the SWNT/ PEDOT/ P3HT: device. The arrows indicate hole and electron flows. The references used to build this energy diagram are the following: Ref. 16, Ref. 17, Ref. 18. M-SWNTs and s-SWNTs refer to metallic and semiconducting SWNTs, respectively.
Solar cell parameters at illumination for the reference cell on ITO-PET substrate and the best solar cell on SWNT-glass substrate.
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