Advances in the development of optoelectronic devices are often a result of the use of new
materials or systems with better properties compared to existing materials. In this aspect,
zinc oxide (ZnO) nanostructures have found to be a promising material due to their wide
direct bandgap of 3.37 eV at room temperature and a large exciton binding energy (about
60meV). ZnO nanostructures exist in a variety of morphologies with significant electrical,
mechanical, optical, and piezoelectric properties. It is a highly versatile material for doping of …

Metal oxides are most promising materials for technological requirements and a scientific
point of view. Researchers are more interested in metal oxide semiconductors, especially
with nanomaterials, due to their vast applications in different areas (Prasanna et al., 2019).
Of different metal oxide nanomaterials, zinc oxide (ZnO) is the most encouraging and
desirable material due to its unique physical and chemical properties. It has wide versatile
properties such as a large specific area, nontoxicity, biocompatibility, etc.(Theerthagiri et al …