Preparation And Luminescence Properties Of A New Rare Earth Ions Activated Ca₉M GK（PO₄）₇ Phosphor

In this article Ca9 Mg K(PO4)7 phosphor was prepared for UV- near ultraviolet excitation, the fluorescent material of crystal structure was analyzed.To characterize the luminescence properties of samples,excitation spectra, the emission spectra, concentration diagram, chromaticity diagram as supplementary data was studied.The main research contents: a series of Ca9-xMg K(PO4)7: x Dy3+ fluorescent material was synthesized. The samples emitted strong yellowish white under UV excitation.When the doping concentration of x = 0.01, the sample presented to the white light emission with color coordinates(0.33,0.32) is very close to the standard white light(0.33, 0.33).It synthesized a new orange-red light emitted Ca9-xMg K(PO4)7: x Sm3+ fluorescent material.Rare earth Sm3+ activation of fluorescent material, mostly presented orange light.Its excitation spectra are distributed in a wide spectral range,The excitation spectrum of the sample distribution at 340 ~ 500 nm. Locating at 607 nm narrow band transition was the strongest emission peak. The charge compensation ion was introduced to monitoring the luminescence after matching the charge.Luminous quality has been significantly improved.It was synthesized Ca9-xMg K(PO4)7: x Eu3+ red light-emitting material.The excitation spectra of the samples included: O2--Eu3 + charge transfer band and Eu3+ characteristic absorption transition; there were not concentration quenching phenomenon.A series of Ca9-xMg K(PO4)7: x Tb3+ fluorescent material were synthesized,The main peak distributed in a wide range and show a strong excitation.The transition peak of emission spectrum was steep and intense transitions. The introduced Ce3+ can usually sensitizing other rare earth ions,So the Ca9 Mg K(PO4)7: Ce3+, Tb3+ energy transfer effect was studied.