Anti-stokes luminescence of solid AgCl0.95I0.05 solutions

An anti-Stokes luminescence band with λmax = 515 nm of microcrystals of solid AgCl0.95I0.05 solutions excited by a radiation flux of density 1013–1015 quanta/cm2·sec in the range 600–800 nm at 77 K was detected. It is shown that the intensity of this luminescence and the frequency of its excitation...

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Bibliographic Details
Published inJournal of applied spectroscopy Vol. 72; no. 6; pp. 809 - 813
Main Authors Ovchinnikov, O. V., Evlev, A. B., Efimova, M. A., Klyuev, V. G., Latyshev, A. N., Utekhin, A. N., Kholkina, A. M.
Format Journal Article
LanguageEnglish
Published New York Springer Nature B.V 01.11.2005
Subjects
Excitation spectra
Forbidden bands
Low temperature
Luminescence
Microcrystals
Photoluminescence
Ultraviolet radiation
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Summary:An anti-Stokes luminescence band with λmax = 515 nm of microcrystals of solid AgCl0.95I0.05 solutions excited by a radiation flux of density 1013–1015 quanta/cm2·sec in the range 600–800 nm at 77 K was detected. It is shown that the intensity of this luminescence and the frequency of its excitation depend on the prior UV-irradiation of samples. Analysis of the stimulated-photoluminescence spectra and the anti-Stokes luminescence excitation spectra of the indicated microcrystals has shown that to the centers of anti-Stokes luminescence excitation correspond local levels in the forbidden band of the crystals. These states are apparently due to the atomic and molecular disperse silver particles that can be inherent in character or formed as a result of a low-temperature photochemical process.
ISSN:0021-9037
1573-8647
DOI:10.1007/s10812-006-0007-2