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Modulation and Excitation of the Infrared Luminescence of ZnS(Cu) by Electric AC Fields
Author(s) -
Gumlich H.E.,
Moser R.,
Neumann E.
Publication year - 1969
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.19690320115
Subject(s) - electroluminescence , infrared , luminescence , electric field , excitation , excited state , materials science , modulation (music) , ion , radiation , optoelectronics , irradiation , electron , atomic physics , chemistry , optics , physics , nanotechnology , organic chemistry , layer (electronics) , quantum mechanics , acoustics , nuclear physics
The infrared luminescence of ZnS(Cu) due to internal transitions within the 3d 9 configuration of Cu 2+ ions excited by radiation may be modulated by electric ac fields (field modulation). The experimental data lead to the conclusion that the modulation of the emission is caused by field‐induced density oscillations of free electrons within the ZnS lattice. The infrared Cu 2+ emission may also be obtained without exciting radiation by the action of the electric ac field (electroluminescence). The infrared electroluminescence may be stimulated or quenched by additional irradiation.