摘要
The luminescence properties of aluminate sodalite Ca8[Al12O24](WO4)2 (CAW) undoped and doped with Tb3+ are reported and discussed. At room temperature the emission of tetrahedral 2-4WO in CAW showed an abnor-mally small Stokes shift (9060 cm-1), which is related to the crystal structure of CAW. A strong absorption band in the excitation spectrum of the Tb3+-activated CAW is ascribed to the absorption of the charge transfer state Tb4+- W5+, into which the excitation resulted in the efficient emission from the 5D4 level of Tb3+, but not from the 5D3 level.
The luminescence properties of aluminate sodalite Ca8[Al12O24](WO4)2 (CAW) undoped and doped with Tb3+ are reported and discussed. At room temperature the emission of tetrahedral 2-4WO in CAW showed an abnor-mally small Stokes shift (9060 cm-1), which is related to the crystal structure of CAW. A strong absorption band in the excitation spectrum of the Tb3+-activated CAW is ascribed to the absorption of the charge transfer state Tb4+- W5+, into which the excitation resulted in the efficient emission from the 5D4 level of Tb3+, but not from the 5D3 level.
基金
Project supported by the National Natural Science Foundation of China (No. 29771029).
