Electron–vibrational interaction in the 5d states of Ce 3+ ions in halosulphate phosphors

Abstract

Using the literature data on excitation and luminescence spectra of Ce 3+ ions in NaMgSO 4F, Na 3SO 4F, and KZnSO 4Cl halosulphate phosphors [S.C. Gedam, S.J. Dhobe, S.V. Moharil, J. Lumin. 126 (2007) 121], we performed comparative studies of electron–vibrational interaction (EVI) of the cerium 5d states with host lattices. The main EVI parameters, such as the Huang-Rhys factor, effective phonon energy, and zero-phonon line position, were estimated and reported for these systems for the first time. The obtained results were checked by modeling the Ce 3+ 5d–4f emission line shapes; good agreement with experimental spectra confirms validity of the performed analysis.