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Luminescence of Cs 2 NaYCl 6 —Bi 3+ (6s 2 )
Author(s) -
Van Steen A. C. Der
Publication year - 1980
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.2221000227
Subject(s) - excited state , luminescence , excitation , atomic physics , ion , absorption (acoustics) , emission spectrum , absorption spectroscopy , spectral line , chemistry , physics , optics , organic chemistry , quantum mechanics , astronomy
The luminescence properties of Bi 3+ ‐activated Cs 2 NaYCl 6 crystals are presented. The Bi 3+ ion (6s 2 ) occupies an Y 3+ site which has cubic symmetry. Excitation in the A absorption band yields 3 T 1u emission. Excitation in the C absorption band, however, yields 3 T 1u and 3 A 1u emission, because both levels are populated by nonradiative processes from the 1 T 1u excited state. The emission and excitation spectra show vibrational structure. The vibronic lines are assigned and discussed.