Synthesis of hibiscus nanopetals like shapes of copper selenide by electron beam irradiation

摘要

The electron beam irradiation could be used to control the dimensions of the electrodeposited copper selenide nanostructures in the nanometer scale. Copper selenide nanostructures with rose flower and hibiscus nanopetals of various dimensions and lengths were obtained by the electron beam irradiation. This study reports the effect of irradiation of 2 MeV electron beam on the crystal structure, surface morphology, optical properties and compositional analysis of copper selenide nanostructured thin films. Upon electron beam irradiation, the band gap energy of copper selenide decreases from 2.53 to 2.39 eV along with an increase in the crystal size for dose up to 45 kGy. Similarly, X-ray diffraction studies show that the crystal size of copper selenide decreases from 11 to 6 nm with electron dose of 50 kGy and the materials exhibit poor crystallization with increase in the band gap energy up to 2.62 eV.