摘要
KBr:Pr with a submicron rod structure is successfully synthesized by a solid-state reaction using absolute alcohol as the abrasive.X-ray diffraction,scanning electron microscopy,photoluminescence spectra and fluorescence decay curves are used to characterize the resulting materials.The influences of Pr^(3+)dopant concentration on the luminescence and lifetime are discussed.Furthermore,luminescent measurements show that KBr:Pr has a high emission intensity compared with other Pr-doped matrixes,which is related to the low phonon energy of KBr.The results suggest that the phonon energy of the host is important in determining the luminescent efficiency.
基金
by the National Natural Science Foundation of China under Grant Nos 60877029,10904109,60977035 and 60907021
the Natural Science Foundation of Tianjin(Nos 09JCYBJC01400 and 11JCYBJC00300)
the Natural Science Foundation of the Tianjin Education Committee(No 20071207)
Tianjin Key Subject for Materials Physics and Chemistry.
