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Synthesis And Electron Emission Properties Of Aligned Carbon Nanotube Arrays, Suman Neupane
Synthesis And Electron Emission Properties Of Aligned Carbon Nanotube Arrays, Suman Neupane
FIU Electronic Theses and Dissertations
Carbon nanotubes (CNTs) have become one of the most interesting allotropes of carbon due to their intriguing mechanical, electrical, thermal and optical properties. The synthesis and electron emission properties of CNT arrays have been investigated in this work. Vertically aligned CNTs of different densities were synthesized on copper substrate with catalyst dots patterned by nanosphere lithography. The CNTs synthesized with catalyst dots patterned by spheres of 500 nm diameter exhibited the best electron emission properties with the lowest turn-on/threshold electric fields and the highest field enhancement factor. Furthermore, CNTs were treated with NH3 plasma for various durations and the …