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- W4293387691 abstract "In the present report, field electron emission (FE) characteristics of cobalt ferrite (CF) nanoparticles (NPs) decorated on reduced graphene oxide (rGO) are studied. The rGO-CF nanocomposite was synthesized by simple glycol-based route. The formation of rGO-CF nanocomposite was confirmed using Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM). TEM results indicated the uniform decoration of CF NPs on the rGO sheet. The average particle size of decorated CF NPs is ∼8 nm. XPS results revealed the partial reduction of GO to rGO. The ultraviolet photoelectron spectroscopy (UPS) was utilized to calculate the work function of the nanocomposite and it was found to be ∼4.3 eV. The FE properties of rGO-CF nanocomposite were investigated in planer diode assembly. The nanocomposite showed excellent FE performance with low turn-on ∼ 1.34 V/μm and threshold field ∼ 1.72 V/μm values. The maximum current density was found to be 2.8 mA/cm 2 , at an applied field of 2.88 V/μm. This enhancement in FE characteristics was explained on the basis of surface morphology, increased number of emitting sites, high field enhancement factor, and reduction in the work function of the emitter. The FE results suggest that rGO-CF based emitters have the potential for the development of various micro-nano electronic devices. • rGO-CF nanocomposite was synthesized by simple glycol assisted route. • Morphological analysis was carried out using TEM. • XPS analysis determined oxidation states of Co and Fe. Further, XPS confirmed partial reduction of GO. • UPS was employed for the analysis of surface hybridization and work function calculation. • FE behavior of GO and rGO-CF nanocomposite was investigated." @default.
- W4293387691 created "2022-08-28" @default.
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- W4293387691 date "2022-10-01" @default.
- W4293387691 modified "2023-10-15" @default.
- W4293387691 title "Photoelectron properties and enhanced field electron emission of cobalt ferrite-reduced graphene oxide nanocomposite" @default.
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- W4293387691 doi "https://doi.org/10.1016/j.elspec.2022.147245" @default.
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