Radiative Transition Probabilities in Tb^<3+> and Fluorescence Colors Producible by Tb^<3+>-Activated Phosphors

概要

論文の詳細を見る
For the purpose of evaluating the electric dipole and the magnetic dipole transition prababilities in Tb^<3+>, the reduced matrix elements for ^5D_4⟶^7F_J and ^5D_3⟶^7F_J have been calculated. From the results, fluorescence colors producible by Tb^<3+>-activated phosphors have been predicted: The best green colors with short persistence have the chromaticity coordinates around x=0.321, and y=0.651. For this purpose, Tb^<3+> ions should be embedded in lattice sites without inversion symmetry. The nonradiative transition probabilities for ^5D_3⟶^5D_4 due to multipolar interactions have been evaluated. When the Tb concentration is higher than several per cent, the quadropole-dipole interaction between the Tb^<3+> ions in the metastable state ^5D_3 and those in the ground state ^7F_6 is predominantly responsible for the nonradiative ^5D_3⟶^5D_4 relaxation.
社団法人応用物理学会の論文
1967-10-05