Luminescent property of a novel green emitting phosphor Sr3Bi(PO4)3:Tb3+

• Sr3Bi(PO4)3:Tb3+ can produce green emission under the 376 nm radiation excitation.
• The concentration quenching effect of Tb3+ in Sr3Bi(PO4)3 can be observed.
• The CIE color coordinates of Sr3Bi(PO4)3:Tb3+ locate in the green region.

A novel green phosphor Sr3Bi(PO4)3:Tb3+ is synthesized by a high temperature solid-state method at 1250 °C in air, and its luminescent property is investigated. The powder X-ray diffraction patterns of Sr3Bi(PO4)3:Tb3+ indicate a similarity crystalline phases to Sr3Bi(PO4)3. Sr3Bi(PO4)3:Tb3+ shows green emission under the 376 nm radiation excitation, and the prominent luminescence in green (543 nm) due to the 5D4–7F5 transition of Tb3+. For the 543 nm emission, the excitation spectrum has several excitation bands, and the strongest excitation peak locates at 376 nm. The emission intensities of Sr3Bi(PO4)3:Tb3+ can be influenced by the Tb3+ doping concentration, and can be achieved the maximum at 0.1 mol Tb3+. Moreover, the concentration quenching effect of Tb3+ in Sr3Bi(PO4)3 can be observed. The CIE color coordinate of Sr3Bi(PO4)3:0.1Tb3+ is (0.299, 0.542).

Sr3Bi(PO4)3:Tb3+ can create the green emission, and their CIE chromaticity coordinates locate in the green region.Figure optionsDownload as PowerPoint slide