Optical properties of samarium doped ZnO thin films

Abstract

Samarium doped ZnO (Sm:ZnO) thin films were deposited onto glass substrates by spray pyrolysis. The Sm:ZnO thin films were annealed in various atmosphere such as air (ambient), oxygen and nitrogen. A number of techniques, including X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy, UV-visible and photoluminescence (PL) were used to characterize the obtained Sm:ZnO thin films. Raman spectroscopy and XRD studies were conform wurzite structure of Sm:ZnO thin films. PL studies shown that the broad emission spectra, which includes UV to green-yellow (visible) region.