Abstract
A simple polymer synthesis was used to successfully synthesized Zinc Oxide Nanoparticles (ZnO NPs), and the influence of the different calcination temperature on the structural, and optical properties of the material was observed using several techniques. The formation of ZnO NPs was confirmed by FT?IR, EDX, XRD, FESEM and TEM images upon calcination from 500?750?C. The FESEM images showed the ZNO NPs synthesized possessed a hexagonal shape and tended to become larger at higher calcination temperature. The XRD and FTIR revealed the precursor to be amorphous at room temperature but transform to a crystalline structure during the process of calcination. The crystalline and particle size increase as the temperature was increased. The crystalline size was between 24?49 nm for all samples calcined at 500?750?C. The optical properties obtained by UV?vis reflectance spectrometer have further confirmed the formation of ZnO NPs. The band gap exhibits typical ZnO wide band gap, and the values decrease with an increase in calcination temperature.
Highlights
Properties of semiconductor material such Zinc Oxide (ZnO) have attracted significant attention recently from researchers and Scientist in various fields of human endeavor
The XRD and FTIR revealed the precursor to be amorphous at room temperature but transform to a crystalline structure during the process of calcination
The synthesized ZnO NPs were characterized by several techniques such as FT-IR, energy-dispersive X-ray spectroscopy (EDX), XRD, transmission electron microscopy (TEM), FESEM and UV-vis
Summary
Properties of semiconductor material such Zinc Oxide (ZnO) have attracted significant attention recently from researchers and Scientist in various fields of human endeavor. ZnO exhibits a hexagonal wurtzite structure with a direct band gap of 3.37 eV. While in the visible region, it produces an optical transparency with a vast exciton binding energy of 60 meV. ZnO is an n-type II-VI semiconductor and oxygen vacancies, zinc interstitials or complex defects are identified as principal donor centers [1, 2]. Due to the fundamental properties ZnO possessed, it becomes an attractive material for. Alibe et al /Science of Sintering, 49 (2017) 263-275
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