Photo-Sensing And Photo-Conversion Investigation Of Single Walled Carbon Nanotube-Silicon Interface: Role Of Acid Stimulation

Single walled carbon nanotubes (SWCNTs) are emerging as potential candidate in solar applications because of their remarkable structural, electrical and optical properties. In this work, we have reported simple and effective approach for the fabrication of SWCNTs/Si interface which play important role in photo-sensing and photo conversation applications. It is observed that, controlled acid treatment of SWCNTs at room temperature conditions proved helpful for the removal of amorphous carbon and significantly enhanced their photo-sensing response from 4% to 40%, respectively. In addition, it is found that open circuit voltage and current density of SWCNT/Si interface is become increased due to the presence of functional groups. However, Raman analysis also confirms that, acid stimulation significantly affect their crystalline structure. These results are important and compatible with the existing silicon technology without adopting any complex technique.