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Calculation of Light‐Stimulated Luminescence and Current Transients in Phosphors. (Release of Trapped Carriers by Light)
Author(s) -
Bráunlich P.
Publication year - 1967
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.19670220210
Subject(s) - phosphor , thermoluminescence , luminescence , materials science , charge carrier , optoelectronics , recombination , rate equation , light emitting diode , kinetic energy , electron , atomic physics , kinetics , chemistry , physics , biochemistry , quantum mechanics , gene
The paper discusses light‐stimulated luminescence and conductivity in phosphors using a model proposed by Schön [1]. This model was previously used for the calculation of thermoluminescence on thermally stimulated current [2]. It considers transitions between defect levels and both bands (conduction band and valence band) and is, therefore, suited for the calculation of light‐stimulated recombination phenomena in phosphors in cases where the energy distribution of light allows a simultaneous release of trapped carriers from electron and hole traps. Approximate solutions are presented. In one case the approximate solutions are compared with numerical solutions of the rate equations which govern the recombination kinetics. A method for the determination of the cross‐section of hole traps for light absorption is discussed.