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ESR Detection of Self‐Trapped Holes in AgCl
Author(s) -
Höhne M.,
Stasiw M.
Publication year - 1968
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.19680280126
Subject(s) - chalcogen , irradiation , impurity , doping , annealing (glass) , ion , materials science , chlorine , electron , lattice (music) , blue light , analytical chemistry (journal) , photochemistry , crystallography , chemistry , optoelectronics , metallurgy , physics , organic chemistry , chromatography , nuclear physics , quantum mechanics , acoustics
Ag 2+ centres are produced in doped and appropriately treated AgCl crystals by irradiation with blue light at 20 ° K. It is shown that the only purpose of the preceding treatment is to create a high concentration of electron traps. In chalcogen doped crystals (AgCl:S, Se, Te) electron traps are formed by pre‐irradiation with blue light above 120 ° K; in iron doped crystals the incorporated Fe 2+ ions are converted to Fe 3+ , acting as traps, either by irradiation at 20 ° C or by annealing in chlorine gas. As the paramagnetic data of the localized Ag 2+ centres are independent of the kind of the impurity, one must conclude that the hole is trapped in the undisturbed lattice.