Abstract
Herein, UV/O3 treatment was imposed on the hydrothermally synthesized spinel NiCo2O4 urchin like structure to study its enhancement effect in the field electron emission properties.
Highlights
X-ray tubes,[3] RF amplification, and field emission displays.[4,5] The extraction of an appreciable field emission current at a low applied electric field is technologically important for field emission devices
The UV/O3 treatment leads to a rearrangement of the electronic charges near the O vacancy leading to a reduction in the work function which justifies the improved field emission properties after UV/O3 treatment
Using extensive Density Functional Theory (DFT) calculations, we have studied the modifications in electronic properties of spinel NiCo2O4 due to the introduction of O vacancy as a result of UV/O3 treatment
Summary
X-ray tubes,[3] RF amplification, and field emission displays.[4,5] The extraction of an appreciable field emission current at a low applied electric field is technologically important for field emission devices. Paper of defects.[38] In the detailed observation of Raman bands (Fig. S4(a), ESI†), a sudden peak at 595 cmÀ1 indicates the formation of oxygen vacancies.
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