Premium
A‐luminescence of alkali halides activated by monovalent mercury‐like ions
Author(s) -
Trinkleb M. F.,
Zolovkina I. S.
Publication year - 1977
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.2220790103
Subject(s) - luminescence , excited state , tetragonal crystal system , activator (genetics) , metastability , ion , chemistry , alkali metal , atomic physics , polarization (electrochemistry) , crystal (programming language) , halide , crystal structure , crystallography , materials science , physics , inorganic chemistry , optoelectronics , biochemistry , organic chemistry , computer science , programming language , gene
Polarization is found of the long‐wave A‐luminescence bands in KI:Tl, KI:In, KBr:In crystals at 7 K. It is established that the dependence of the polarization degree on azimuth corresponds to oscillator emission along the crystal axis [111]. These bands are assumed to be due to “trigonal” Jahn‐Teller minima of the activator 3 T 1u excited states. It is established that the 400 nm band in KBr:T1 crystal represents emission from the trigonal minimum of the metastable 3 A 1u ‐state of the activator. A doublet structure of the short‐wave A‐luminescence bands is found and investigated. The hypothesis is made that the structure is connected with the presence of two types of tetragonal Jahn‐Teller minima of the activator 3 T 1u excited states.