Photocurrent response from vertically aligned single-walled carbon nanotube arrays

Abstract

Abstract-Vertically-aligned arrays of single walled carbon nanotubes were created on an optically transparent electrode (FTO glass) these arrays were found to exhibit a prompt current and voltage when exposed to light. These cells were then investigated by electrochemical impedance spectroscopy and found to exhibit a dampening of the recombination reaction over the first 24 hours. Symmetrical cell modeling was successful in simulating the behavior of normal cell architecture.

Chemically grafted of single-walled carbon nanotubes onto a functionalized silicon surface

“…This method produced well aligned SWCNT arrays using appropriate reaction between an amine and carboxylic acid to produce a stable amide linkage. Vertically aligned CNTs arrays produced by wet chemical assembly have been tested as chemical sensors [16], biological sensors [14], and photovoltaic devices [18] and [19] where they have shown promise as a simple method of producing functional surface bound CNTs arrays.…”

Single walled carbon nanotube network electrodes for dye solar cells

“…In previous work, we have demonstrated that covalent attachment of SWCNTs to fluorine tin oxide (FTO) coated glass yields electrodes, which produce photocurrent when incorporated into a photoelectrochemical cell [27]. However, the energy output of such a device is quite low due to the small amount of active material on the substrate.…”

Effect of Functional Group Topology of Carbon Nanotubes on Electrophoretic Alignment and Properties of Deposited Layer

“…Ab initio calculations 36 presented in the literature indicate that the longitudinal probability is roughly proportional to the length of the CNT and that the presence of functional groups on CNTs does not alter the polarization characteristics significantly. We used restricted HF method with 6-31+G(d,p) basis set to calculate the longitudinal polarizability (α l ) of CNT (6,6) using GAMESS version 1 MAY 2013 R1. 37 The basis sets used in the present study are appropriate since recent studies reported in the literature calculated electronic properties of nanotubes accurately using lower basis sets.…”

“…Graphitic carbon nanostructures such as CNTs have been the focus of scientific research owing to their interesting physicochemical properties, such as high mechanical strength, electrochemical energy storage capacity, and thermal and electrical conductivity. − Because of their excellent electronic properties, uniform deposits of CNTs are widely used in numerous electronic devices . CNTs are being employed for fabricating electrode materials with extremely high electrochemically accessible specific surface area and high conductivity .…”