Abstract
A unique multi-dimensional hybrid system has been developed by incorporating titania nanoparticle into chemically synthesized amorphous carbon nanotubes (a-CNTs)-amorphous graphene composites. The as-synthesized samples were characterized by x-ray diffraction, scanning and transmission electron microscopy; Raman spectroscopy and photoluminescence spectroscopy. The microscopic studies confirm the attachment of the TiO2 nanoparticles on carbon structures. The performance of the both the pure and hybrid samples as cold cathode emitter has been investigated and it has been found that cold emission performance of the pure carbon system improves considerably after TiO2 nanoparticles being added to it giving a turn on field as low as 2.1V/μm and enhancement factor 2746. The enhancement of field emission characteristic after TiO2 addition was justified from the ‘ANSYS- Maxwell’ software based simulation study.
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