Field Emission Characteristics Of Vertically Aligned Carbon Nanotubes With Honeycomb Configuration Grown Onto Glass Substrate With Titanium Coating

Carbon nanotubes (CNTs) were grown successfully onto a glass substrate using thermal chemical vapour deposition (TCVD) with C2H2 gas at 700 deg C. The synthesized CNTs exhibited good crystallinity and a vertically aligned morphology. Ther vertically aligned CNTs (VACNT) were patterned with a honeycomb configuration using photolithography and characterised using field emission applications. Owing to the electric field concentration, the field emission current density of VACNTs with honeycomb configuration was higher than that of the un-patterned VACNTs. Ti was coated onto the VACNT surface utilising the relatively lower work function to enhance the FE current density.