Manufacture and deposition of copper oxide nanoparticles on quartz glass substrate for study of structural and optical properties

الملخص EN

In this article, thin films of copper oxide are prepared by synthesis of CuO nanoparticles using different solvents by a low cost sol-gel method.

Chemical bath deposition (CBD) method is used on substrates of quartz glasses are dried in oven at 150 ℃ for 3 hours.

Finally these quartz glass pieces are annealed at 500℃ for 1 hour.

The structural and optical properties of the samples have then been tested by XRD, SEM, FTIR and UV-Visible spectrophotometer.

The crystallite size and strain are higher for the CuO nanoparticle synthesized using propanol as solvent that shown by XRD analysis.

The blue shift of direct band gap and the red shift of indirect band gap indicated by UV-Visible spectrophotometer Optical absorption analysis.

So, the blue shift is due to the quantum confinement effect seen for nanoparticle systems while the red shift is associated with the formation of surface defects.