Concentration quenching of Tb3+ luminescence in LaOBr and Gd2O2S phosphors
作者： Jorma Hölsä , Markku Leskelä , Lauri Niinistö
DOI: 10.1016/0025-5408(79)90082-5
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摘要: Abstract The concentration quenching of trivalent terbium 5 D 3,4 → 7 F J emissions from UV-excited (La, Tb) OBr and (Gd, 2 O S phosphors was studied. activation x varied 5·10 −5 to 0.2 for (La 1−x Tb ) 10 −3 0.1 (Gd S. 3 (blue) were observed quench first the 3+ giving rise maximum intensity 0.003 in between 0.005 0.01 optimum 4 (green) 0.05 0.03 Dipole-dipole dipole-quadrupole interactions are possible mechanisms levels. A method determining these phosphors, based on ratios transitions, is also presented.
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