Article ID Journal Published Year Pages File Type
1485595 Journal of Non-Crystalline Solids 2006 6 Pages PDF
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
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