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The Observation of a New D‐Absorption Band in KBr–In Crystals
Author(s) -
Plavina I.,
Popov A. I.
Publication year - 1993
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.2221760125
Subject(s) - luminescence , excited state , excitation , atomic physics , spectral line , activator (genetics) , absorption spectroscopy , oscillator strength , absorption (acoustics) , absorption band , analytical chemistry (journal) , materials science , chemistry , physics , optics , optoelectronics , quantum mechanics , biochemistry , chromatography , gene
Excitation spectra of the activator luminescence directly excited by UV light and creation spectra of the photostimulated luminescence are investigated for KBr‐In crystals with different In + concentrations. It is shown that the electronic states responsible for these two kinds of luminescence differ. Careful analysis of the excitation spectra allow us to find a new D‐absorption band having Gaussian shape with the following parameters: peak position at E 0 = 6.375 eV and halfwidth Δ E = 0.14 eV. The oscillator strength f = 0.12 of the D‐band is also determined.