Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1485595 | Journal of Non-Crystalline Solids | 2006 | 6 Pages |
Abstract
The lifetimes of 3P0 and 1D2 levels of Pr3+ were measured in ZBLAN glasses of composition in mol% 53ZrF4–20BaF2–(4 − x)LaF3–3AlF3–20NaF–xPrF3 (x = 0.1, 0.5, 1, and 3) by resonant excitation. Energy transfer observed between Pr3+ ions was analyzed by means of the Inokuti–Hirayama theory. The non-exponential dependence of the 1D2 decay on Pr3+ concentration indicates that dipole–dipole interaction between Pr3+ is the main process. Orange-to-blue upconversion luminescence was observed and described by two-ion energy transfer mechanism. The temporal evolution of upconversion luminescence was characterized by rise and decay times related to the dopant concentration.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Haigui Yang, Zhenwen Dai, Jianfu Li, Yanjie Tian,