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Photodielectric Investigations on ZnS Phosphors
Author(s) -
Krispin P.,
Ludwig W.
Publication year - 1964
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.19640050315
Subject(s) - phosphor , materials science , dielectric , permittivity , capacitor , polystyrene , excited state , luminescence , range (aeronautics) , optoelectronics , composite material , electrical engineering , atomic physics , physics , voltage , engineering , polymer
Both components of the permittivity of ZnS powders embedded in polystyrene are measured in the frequency range from 0.3 to 500 kHz. It is shown that the dielectric behaviour of the phosphors, when excited optically (photodielectric effect), can be described by the Debye equations. The two‐layer capacitor model does not explain all the dielectric properties of ZnS luminescent materials. The results obtained with certain ZnS specimens can, however, be interpreted by using the concept of transposition processes.