Article ID Journal Published Year Pages File Type
10625631 Ceramics International 2013 9 Pages PDF
Abstract
This paper reports the comparative investigation on structural and optical modifications of Y2O3:Dy3+ phosphor after 150 MeV Ni7+ and 120 MeV Ag9+ swift heavy ions irradiation in the fluence range 1×1011-1×1013 ions/cm2. XRD and TEM studies confirm the loss of crystallinity of ion irradiated phosphors. Diffuse reflectance spectrum shows a blue shift in the absorption band resulting in an increase in band gap after ion irradiation. An increase in the intensity of photoluminescence peaks without any shift in the peak positions was observed with ion fluence. The color coordinates of ion irradiated phosphors approach the white light region with the increase of ion fluence.
Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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