Premium
Cu + Luminescent Centre in LiCl Single Crystals
Author(s) -
Pedrini C.
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.2220870132
Subject(s) - excited state , metastability , luminescence , atomic physics , excitation , cluster (spacecraft) , coupled cluster , energy (signal processing) , chemistry , materials science , physics , molecule , optics , organic chemistry , computer science , programming language , quantum mechanics
Using the cluster approximation, a detailed semi‐empirical molecular orbital calculation is reported for computing the energy levels of Cu + luminescent centres in NaCl and LiCl. Excited states energies are obtained on the basis of 3d 9 4s configuration of Cu + , including spin–orbit interaction. Excitation and emission bands of LiCl:Cu + are reported and their assignments are discussed. The emission process is studied by measuring lifetimes of the emitting level at various temperatures. The energy level scheme provides a satisfactory explanation of the emission process, with the presence of active metastable levels, in agreement with the decay time data.