Comparative Study Of Thin Film Deposition And Characterization Using Carbonic Materials

Abstract

Electrolysis of methanol with Camphor and CNT was used to deposit carbon thin films on Aluminum (Al), Copper (Cu), Silicon (Si), Zinc (Zn) substrates and CNT materials were used to spin coat Silicon (Si). The integration of camphor (C10H16O), a natural source in methanol is studied. To make the electrolytes, different amounts of camphor were combined in methanol solvent. On the negative electrode Al, Cu, Si and Zn substrates were placed. With increasing camphor concentration, the volatility of current density as a function of applied voltage shifted significantly. It is discovered that the current density of all substrates drops initially with camphor compared to a methanol solution and then increases. However, the amount of camphor that can be added to a methanol solution to increase current density has a limit. The amount of camphor needed to achieve maximal current density was found to vary depending on the substrate. On the Zn substrate, the maximum current density was recorded during camphor deposition. CNT deposition on Si substrate produced higher current densities than camphor. The P H of several solutions was measured before and after deposition. Camphor has a P H altering effect. Variations in P H were found as the amount of carbonic materials in the methanol solution varied. Changes in PH before and after deposition indicate any chemical changes on the substrates. The films were examined using scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). Sharp variations between deposited films can be seen in EDS and SEM micrographs. In SEM, the effects of Methanol and other carbonic materials can be seen. In terms of SEM analysis spin coating shows better nano properties compared to electrodeposition. When comparing nano carbonic materials to camphor, EDS research showed that the carbon percentage of the electrodeposited films is higher for nano carbonic materials. The largest percentage of carbon was detected in films made with MWCNT on Si substrate (both electrodeposition and spin coating).