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Processes Due to Optical Excitation of Impurities with One s‐EIectron (Ag 0 , Cu 0 , TP+, In 2+ , Ga 2+ ) in KCI Crystals
Author(s) -
Osminin V.,
Zazubovich S.
Publication year - 1975
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.2220710203
Subject(s) - excitation , delocalized electron , electron , impurity , atomic physics , luminescence , crystal (programming language) , ground state , polarization (electrochemistry) , crystallography , analytical chemistry (journal) , materials science , chemistry , physics , optics , organic chemistry , chromatography , quantum mechanics , computer science , programming language
At optical excitation of the electronic (A 0 ) and hole (A 2+ ) centres with 2 S 1/2 ground state ( 2 S 1/2 centres) in KCI crystals, polarized intra‐centreluminescence and destruction of the centres are observed due to the delocalization of electrons or holes. Localization of holes in the crystal, or interaction of electrons or holes with various crystal defects results in the formation of new centres (e.g. A 0 , V k , V k −T1 0 and V k −T1 + pairs, H, A 2+ v − c ). Luminescence is found to occur at the formation of new centres. Spectral, polarization, temperature, and concentration dependences are investigated for the phenomena observed.