Premium
Optical absorption, photoluminescence, and thermally stimulated luminescence of CsCl: Tb crystals
Author(s) -
Selvan P. Christober,
Selvasekarapandian S.,
Neelamegam P.
Publication year - 1996
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.2221940230
Subject(s) - photoluminescence , thermoluminescence , terbium , luminescence , impurity , materials science , absorption (acoustics) , ion , analytical chemistry (journal) , optoelectronics , chemistry , organic chemistry , chromatography , composite material
Optical absorption, photoluminescence, and thermoluminescence emission studies are made on CsCl:Tb 3+ crystals at room temperature. The presence of impurities is confirmed by the characteristic OA band at 360 nm. Photoluminescence of these crystals shows characteristic Tb 3+ emissions due to transitions from the 5 D 3 and 5 D 4 levels to various levels of the 7 F septet. The glow curve studies clearly show the participation of terbium ions in the thermoluminescence process. The new 415 K glow peak, not observed in pure CsCl, is ascribed to the terbium ion in the vicinity of F centers. All the TL glow peaks give the characteristic emissions of Tb 3+ in addition to the emission due to the recombination of the F electron with V‐type centers.