Swift heavy ion induced modifications in cobalt doped ZnO thin films: Structural and optical studies
作者： Sunil Kumar , R. Kumar , D.P. Singh
DOI: 10.1016/J.APSUSC.2009.05.005
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摘要: Abstract Modifications in the structural and optical properties of 100 MeV Ni7+ ions irradiated cobalt doped ZnO thin films (Zn1−xCoxO, x = 0.05) prepared by sol–gel route were studied. The with a fluence 1 × 1013 ions/cm2 single phase show improved crystalline structure preferred C-axis orientation as revealed from XRD analysis. Effects irradiation on bond studied FTIR spectroscopy. spectrum shows no change bonding Zn–O after irradiation. Improved quality is further supported studies. Optical pristine samples have been determined using UV–vis spectroscopic technique. absorption spectra an appreciable red shift band gap Zn1−xCoxO film due to sp–d interaction between Co2+ electrons. Transmission edges at 1.8 eV, 2.05 eV 2.18 eV corresponding d–d transition tetrahedral field ZnO. AFM study slight increase grain size surface roughness
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