We examined the effect of temperature on the light emission and absorption properties of eight phosphorescent compounds. The phosphors are commercially produced powders that emit mainly in the blue region when illuminated with ultraviolet light (220 to 400 nm). Excitation and emission spectra taken over the temperature range of 20 to 350C are presented for these phosphors. Data from the spectra indicate a strong temperature dependence over this temperature range. Maximum relative intensity changed as a function of temperature in every phosphor examined. In some samples, spectral band shifts and bandwidths also changed with temperature. Of these phosphors, BaMg{sub 2}Al{sub …
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Oak Ridge National Lab., TN (United States)
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Tennessee
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We examined the effect of temperature on the light emission and absorption properties of eight phosphorescent compounds. The phosphors are commercially produced powders that emit mainly in the blue region when illuminated with ultraviolet light (220 to 400 nm). Excitation and emission spectra taken over the temperature range of 20 to 350C are presented for these phosphors. Data from the spectra indicate a strong temperature dependence over this temperature range. Maximum relative intensity changed as a function of temperature in every phosphor examined. In some samples, spectral band shifts and bandwidths also changed with temperature. Of these phosphors, BaMg{sub 2}Al{sub 16}O{sub 27}:Eu and Ba{sub 3}(PO{sub 4}){sub 2}:Eu are candidates for higher-temperature studies.
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Cunningham, D. M.; Allison, S. W. & Smith, D. B.Thermographic properties of eight blue-emitting phosphors,
report,
January 1, 1993;
Tennessee.
(https://digital.library.unt.edu/ark:/67531/metadc1318060/:
accessed July 16, 2024),
University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu;
crediting UNT Libraries Government Documents Department.