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Decay of the Concentration of Photoexcited Holes in Silver Bromide
Author(s) -
Malinowski J.,
Platikanowa 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.19640060326
Subject(s) - silver bromide , bromine , bromide , materials science , flash (photography) , crystal (programming language) , analytical chemistry (journal) , chemistry , optics , inorganic chemistry , silver halide , nanotechnology , physics , chromatography , metallurgy , layer (electronics) , computer science , programming language
The reaction between a deposit of silver and the bromine formed by holes migrating to the surface of a silver bromide crystal is used to verify the existence of mobile holes. The sensitivity of the method is greatly increased by a subsequent chemical treatment of the deposit. The method is used to study the concentration‐decay curve of holes which are generated by a light flash. For the different samples tested, the effective lifetime, as determined from the initial slope of the decay curve is found to be about 10 −4 s. It is shown, however, that a small fraction of the holes remains mobile up to about 10 −2 s after their generation. This suggests that the concentration‐decay is not likely to be described by a simple recombination mechanism.