Premium
Luminescence of the Pb 2+ ‐Ion Dimer Center in CaS and CaSe Phosphors
Author(s) -
Asano S.,
Yamashita N.,
Nakao Y.
Publication year - 1978
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.2220890242
Subject(s) - dimer , ion , phosphor , luminescence , excitation , atomic physics , emission spectrum , reflection (computer programming) , spectral line , chemistry , analytical chemistry (journal) , materials science , physics , optoelectronics , organic chemistry , quantum mechanics , astronomy , computer science , programming language , chromatography
Reflection, emission, and excitation spectra of CaS:Pb 2+ and CaSe:Pb 2+ are measured at 300, 80, and 6K. At higher concentrations of Pb 2+ ions, the emission and exeitation bands due to the Pb 2+ dimer are observed besides those of the Pb 2+ monomer. Theoretical calculation of energy levels of the dimer of Tl + ‐type ions is made on the basis of the localized electron model. The values of the spectroscopic parameters appearing in the energy matrices are determined so that the electronic levels obtained experimentally and theoretically may coincide with each other.