The Tb^3+-doped strontium carbonate phosphor was synthesized via co-precipitation route by microwave assisted.The phosphor powders were characterized by scanning electron microscopy(SEM),X-ray diffraction(XRD) and photoluminescence and photoluminescence excitation(PL-PLE) spectrum. The results showed that Tb^3+acting as a luminescent center probed into the single orthorhombic phase of SrCO3 with flake-like and sphericity-like.The PLE spectrum showed a broadband absorption center in 231 nm,which belonged to 4f7→5d1transition.The sample was the green phosphor since the maximum emission peak located in the vicinity of 543 nm,corresponding to the transition of ^5D4→^7F5.The luminescent intensities increased with increasing Tb^3+concentration, and then decreased because of concentration quenching.The optimal concentration of Tb^3+ was 3.5 mol%.The concentration self-quenching mechanism is exchange interaction.
