Premium
Luminescence Properties of Terbium‐Activated Rare‐Earth Oxyhalides
Author(s) -
Hölsä J.,
Leskelä M.
Publication year - 1981
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221030243
Subject(s) - terbium , electronegativity , ionic radius , luminescence , ion , excitation , chemistry , lanthanide , rare earth , atomic physics , absorption spectroscopy , analytical chemistry (journal) , crystallography , materials science , mineralogy , physics , optoelectronics , organic chemistry , quantum mechanics , chromatography
The luminescence properties of Tb 3+ activated rare‐earth oxyhalides (REOX, RE = Y, La, Gd, and Lu; X = F, Cl, Br, and I) are studied mainly by UV excitation. The intensities of 5 D 3,4 → 7 F J transitions and thus the emission colour are observed to depend strongly on the matrix. In addition, the energies of 5 D 3,4 → 7 F 4–6 transitions increase with increasing ionic radius of the host cation within the isomorphous REOBr series. The fine structure of the Tb 3+ spectrum is used as a structural probe on the RE oxyiodides. The energies of strong 4f → 5d absorption bands generally increase with the electronegativity of the host anion. According to the excitation spectra, efficient energy transfer occurs from the Gd 3+ ion to the Tb 3+ ion in GdOX matrices.