Abstract
Nanocomposite thin films of SnO2–ZnO were prepared by carbothermal evaporation of mixture of Sn and ZnO without using any catalyst. The nanocomposite thin films were irradiated with 8MeV Si3+ ions at room temperature to fluence varying from 1×1014 to 1×1015ions/cm2. Effects of MeV ion irradiation on the structural and optical properties of SnO2–ZnO nanocomposites were studied using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) with energy dispersive X-ray spectroscopy, Photoluminescence spectroscopy (PL) and Raman spectroscopy. XRD studies revealed the presence of Sn, SnO2 and ZnO nanostructures in the as-deposited films. FESEM studies on the irradiated samples revealed the formation of ZnO nanosheets. A tentative growth mechanism underlying the formation of ZnO nanosheets is proposed. Ion irradiation resulted in a significant enhancement in the UV and defect emissions from ZnO and SnO2 nanostructures in the nanocomposite.
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