Results 241 to 250 of about 17,007 (304)
Energy extraction from dark Fe<sup>3+</sup> in A<sub>2</sub>Sc<sub>2</sub>B<sub>4</sub>O<sub>11</sub>:Fe<sup>3+</sup>, Yb<sup>3+</sup> (A = Sr, Ba) toward promoted NIR luminescence and pc-LED light source for multifunctional applications. [PDF]
Light Sci ApplYu D +6 more
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Luminescence of aggregate color centers in KF [PDF]
Journal of Luminescence, 1991 Abstract Complex F-aggregate centers were studied in pure and Li 1 -doped KF, by means of optical excitation. Three new emission bands in the near infrared region were revealed. Among them, the luminescence at 1040 nm was identified as the emission of F 3 defects because of its excitation, its peak position and its enhancement under irradiation at ...
COLUZZI R +7 more
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Luminescence centers in porous silicon [PDF]
Applied Physics A: Materials Science & Processing, 1995 Photoluminescence studies on porous silicon show that there are luminescence centers present in the surface states. By taking photoluminescence spectra of porous silicon with respect to temperature, a distinct peak can be observed in the temperature range 100–150 K.
K. W. Cheah +6 more
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Interpretation of Luminescence Centers
Springer Mineralogy, 2015The chapter contains experimental data and theoretical considerations enabling to interpret the luminescence centers in the studied minerals.
Renata Reisfeld +2 more
exaly +2 more sources
New color centers and photostimulated luminescence of BaFCl:Eu2+ [PDF]
Journal of Physics and Chemistry of Solids, 1998 Three new absorption bands, appearing around 670, 865 and 980 nm, are observed in BaFCl:Eu2+ phosphors. They are ascribed to F aggregates formed by association of F centers or by trapping of electrons to the primary F-n(+) (n = 2,3,4) centers. The growth
Zhanguo Wang +2 more
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Luminescence of an M center in ZNS?
Solid State Communications, 1980Abstract Selected, differently doped and annealed cubic ZnS monocrystals exhibit a structured luminescence in the spectral region between 815 and 1150 nm. At 4 K more than 70 lines with typical linewidths of only 3–5 cm−1 could be resolved. The influence of temperature, of magnetic fields up to B = 10T, and of irradiation with additional light were ...
I. Broser +3 more
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Journal of Applied Spectroscopy, 1997
Sc2O3 luminescence spectra are studied. The spectra are separated into elementary bands by the Alentsev–Fock method. It is established that the luminescence spectra consist of a number of overlapping bands with maxima at 3.5; 3.05; 2.65; 2.35, and 2.05 eV. The band at 3.5 eV is interpreted as emission of self-localized excitons, and the other bands, as
O. M. Bordun, I. M. Bordun
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Sc2O3 luminescence spectra are studied. The spectra are separated into elementary bands by the Alentsev–Fock method. It is established that the luminescence spectra consist of a number of overlapping bands with maxima at 3.5; 3.05; 2.65; 2.35, and 2.05 eV. The band at 3.5 eV is interpreted as emission of self-localized excitons, and the other bands, as
O. M. Bordun, I. M. Bordun
openaire +1 more source