Study on influences of Sb doping content on the defects of ZnO film by photoluminescence (PL) spectrum and raman scattering spectrum

Sb-doped ZnO thin films with different values of Sb concentrations are deposited on glass substrate by using spin-coating technique. The influences of Sb doping content on the microstructural, photoluminescence and Raman properties of ZnO film are systematically investigated by X-ray diffraction (XRD), transmission spectrum, photoluminescence (PL) spectrum and Raman scattering spectrum. The results indicate that ZnO thin film doped with Sb exhibits a hexagonal wurtzite structure with preferred c-axis orientation. The strong violet emission peak located at 3.11 eV is observed in the Sb-doped ZnO thin film by photoluminescence. Conbining the Raman scattering spectrum with photoluminescence, it is concluded that the strong violet emission peak related to SbZn-O complex defect in ZnO:Sb film.

Influence of Calcinations Temperatures on Structural and Photoluminescence Properties of ZnO Nanoparticles via Precipitation Method

Zinc oxide (ZnO) nanoparticles with spherical morphologies were successfully produced via precipitation of Zn and I2 with DEA was employed as a chelating agent. The products were further heat treated at four different calcinations temperature commences from 250 °C to 1150 °C. Studies on ZnO structural, morphologies and optical characteristic with respect to calcinations temperatures were conducted using XRD, TEM and PL spectroscopy respectively. The XRD spectra reveal hexagonal wurtzite signature along with preferred orientation growth in (101) plane. Particles size of ~ 60 nm and strong blue-violet emission peak of 417 nm (3.0 eV) has been observed for ZnO calcined at 850 ᵒC. Results reveal a close relationship between the calcinations temperature and ZnO microstructure whereas, its luminescence behaviour showing a strong depending on ZnO microstructure.