Preparation and Luminescent Properties of LiBaPO_4∶Eu~(3+) Phosphor

Eu3+ activated LiBaPO4 phosphor with several emission peaks(589,594,619,655 and 692 nm),under the near ultraviolet light(401 nm) was synthesized by the high temperature solid state reaction method.And the phase present of the phosphor was characterized by powder X-ray diffraction(XRD),the spectrum of the phosphor was measured by a SHIMADZU RF-540 fluorescence spectrophotometer.It was found that the processing parameters,including the activator content and the charge compensator,affected the emission intensity and other luminescent properties.The emission intensity of LiBaPO4∶Eu3+ phosphor reaches the maximum at 5% Eu3+,and the concentration self-quenching mechanism is the d-d interaction by Dexter theory.When the charge compensator incorporated,the emission intensity of the phosphor can be enhanced.The results show that LiBaPO4∶Eu3+ is a promising red phosphor for white LED.