Characterization of Electrodeposited Multiwall Carbon Nanotube Films on Silicon Substrates

Multiwall Carbon Nanotube (MWCNT) films were deposited on Silicon (Si) substrate. The effect of 0.1% and 0.2% solutions of MWCNT incorporation with methanol were investigated. pH of various solutions before and after deposition has been analyzed. pH of the solutions was increased after deposition. Change in the variation of current density as a function of applied potential was observed. Current density was increased as the percentage of MWCNT was increased. The electrodeposited MWCNT films were characterized by SEM, UV-VIS-IR and Raman spectroscopy. In SEM micrographs, changes were observed in the electrodeposited films compared to pure Si substrates. Raman measurement proved the amorphous nature of MWCNT in these thin films. From the UV-VIS-IR measurement it was observed that the absorption of light has been increased by the increase of MWCNT. So the optoelectronic properties of the electrodeposited films are tunable by electrodeposition using MWCNT on Si substrates.