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- W2373628461 abstract "The CaLa1-xAl3O7∶xDy3+(0≤x≤0.15) phosphors were synthesized by high temperature solid-state rmethod.The phase was characterized by X-ray diffraction(XRD).The effects of Dy3+doped concentration on crystal structure and luminescence properties of CaLa1-xAl3O7∶xDy3+ were studied.The unit cell volume decreases as Dy3+ doped concentration ion increasing.The luminescence of CaLaAl3O7:Dy3+ under 348 nm excitation originated from Dy3+ characteristic emission,the 478 nm,577 nm and a small peak at 667 nm.The chromaticity coordinates of luminescence of CaLa1-xAl3O7∶xDy3+ have almost the same value,which are close to CIE isoenergetic white light point(x=0.33,y=0.33).The effect of Dy3+ concentration on the emission intensity of CaLa1-xAl3O7∶xDy3+ was investigated.The result shows that the emission intensity of CaLa1-xAl3O7∶xDy3+ phosphor firstly increasesd as Dy3+concentration increasing,then decreasesd,viz,the concentration quenching exists.The Dy3+concentration corresponding to the maximal emission intensity is 4 mol%.The concentration quenching mechanism is the d-d interaction by Dexter theory." @default.
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- W2373628461 date "2011-01-01" @default.
- W2373628461 modified "2023-09-27" @default.
- W2373628461 title "Effect of Dy~(3+) Doping on Crystal Structure and Luminescent Properties of CaLaAl_3O_7" @default.
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