Abstract:
In present work, novel and one-step process, called Pulsed Laser Ablation
in Liquids (PLAL) technique was used to synthesis a high purity, stable and less
agglomeration nanostructure semiconductors.
Nanostructure copper oxides (cupric and cuprous oxides) were synthesized
using Nd: YAG pulsed laser with wavelength of 532 nm. The effect of the
oxidizing media on the composition, morphology and optical properties of the
synthesized nanomaterials produced by PLAL were studied using XRD, EDS,
FE-SEM, TEM, FTIR and UV-Vis spectrophotometer. The effect of annealing
temperature on the synthesized nanostructure copper oxides in deionized water
was also studied.
The results showed that the produced samples of Cu/Cu2O nanostructure
were converted predominantly into CuO nanostructure at annealing temperature
of 300 ºC. As the annealing temperature increases from 300 to 900 ºC, the grain
sizes of CuO nanostructure increased from 9 ± 1 to 26 ± 1 nm. The study
revealed that the band gap and other optical properties of nanostructure
Cu/Cu2O were changed due to post annealing.
