An investigation on the effect of precursor concentration on structural, optical and electrical properties of nano-structured CuO deposited by spray pyrolysis method

Nanostructured cupric oxide (CuO) thin films have been deposited onto glass substrates at differentprecursor concentrations by economic spray pyrolysis technique. The morphological, structural, optical and electrical properties of CuO thin films are investigated using FESEM images, XRD&UV-Vis spectra, and I-V measurements. We found all samples contained various micro and nano-structure polycrystalline with the main orientation of (002); also the layer with precursor molarity of 0.15 M is in optimum conditious from the structural (highest crystallite size and lowest defect density) and optical (lowest band gap and highest optical absorbance) properties point of views.

Keywords:

Cupric oxide , thin film , spray pyrolysis , Nano-struchure