Abstract
ZnO thin films produced by the pyrolysis of zinc acetate dihydrate, sprayed on heated substrates, are naturally n-doped due to structural defects like oxygen vacancy, interstitial zinc, and others. Since the ZnO band gap is about 3.3 eV, ultraviolet radiation (UVR) photons can generate electron-hole pairs, increasing the number of electrons in the conduction band. These photo-generated el…