Synthesis and Optical Characterization of Zinc Nanoparticles using a Chemical Method
Jyoti Sheoran and Rajesh Kumar
The nanoparticles of zinc oxide have been synthesized using various methods such as chemical, hydrothermal, sol-gel, co-precipitation, chemical vapor deposition, wet chemical method and many more. These nanoparticle sample’s were characterized by different techniques such as X-ray diffraction and UV-visible spectroscopy. To obtain and recognize the particle size, crystal structure, atomic arrangement, grain size and lattice parameters, XRD patterns were obtained. They revealed the hexagonal wurtzite structure of zinc oxide. According to the literature review, average particle size of the zinc oxide is 12-30nm. Band gap and absorbance of light is obtained using UV-visible spectroscopy which provides optical properties and reflectance spectroscopy spectra. Using literature review, by the help of light absorbance factor the obtained band gap and band energy of zinc oxide is 3.37 eV, 60 meV respectively. Due to its high band gap energy, it is commonly used for optoelectronic devices and also has many other applications.
Keywords: Band gap, Zinc oxide nanoparticle, Synthesis, X-Ray diffraction