Article ID Journal Published Year Pages File Type
8000520 Journal of Alloys and Compounds 2015 4 Pages PDF
Abstract
Y2O3:Eu3+ and Y2O3:Eu3+, Ho3+ phosphors were prepared by the solid-state reaction method. X-ray diffraction (XRD) patterns indicate that the Eu3+ and/or Ho3+ doping do not show obvious effect to the cubic Y2O3 crystal. Under UV 254 nm excitation, both samples present same photoluminescence (PL) properties, while Y2O3:Eu3+, Ho3+ phosphor shows a red-emitting long afterglow phenomenon, and the Eu3+ ion are the luminescent center during the decay process. The decay characteristic of Y2O3:Eu3+, Ho3+ phosphor is according with the double exponential equation. Thermoluminescence (TL) analysis indicates that the traps in the Y2O3:Eu3+ and Y2O3:Eu3+, Ho3+ host are both origin from Eu3+ ion. The co-doped Ho3+ ion shoaled the trap depth, which is benefit for the carriers to escape from the trap, and then the afterglow phenomenon happened.
Related Topics
Physical Sciences and Engineering Materials Science Metals and Alloys
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