Abstract
A novel orange-emitting phosphor, Ca2.6Sr2.4(PO4)3Cl:Eu3+, was prepared by a modified solid-state reaction and X-ray powder diffraction (XRD) analysis confirmed the formation of Ca2.6Sr2.4(PO4)3Cl:Eu3+. Photoluminescence (PL) results showed that the phosphor can be efficiently excited by UV-visible light from 380 to 500 nm, and exhibited bright orange emission. The effects of the doped-Eu3+ concentration in Ca2.6Sr2.4(PO4)3Cl:Eu3+ on the PL were investigated in detail. The results showed that the relative PL intensity decreases with Eu3+ concentration increasing due to concentration quenching. TEM images show that the grain size of Ca2.6Sr2.4(PO4)3Cl:Eu3+ is about 45 nm, which is in full agreement with the theoretical calculation data from the XRD patterns.
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