Abstract
The defect level dependent structural and optical properties of nickel oxide nanoparticles synthesized by chemical precipitation method have been investigated. The Nickel oxide nanoparticles were obtained by calcinating theophrastite β nickel hydroxide nanoparticles at different temperatures. Thermogravimetric analysis was performed to study the thermal stability of the synthesized precursor up to 680 °C. The defect level, contributed by the OH bonds of the nickel hydroxide, has been varied by controlling the calcination temperature of the samples and subsequent variation in emission has been observed. The defect emission is tunable from 2.77 eV to 2.93 eV and can be used as a violet light source in optoelectronic display devices. The obtained results have been established with structural, elemental and FTIR analysis.
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