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Inne
On the reasons for low luminescence efficiency in combustion-made Lu2O3:Tb.
Autorzy
Rok wydania
2001
Czasopismo
Numer woluminu
16
Strony
445-452
DOI
10.1016/S0925-3467(01)00009-X
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
Nanocrystalline Tb-doped Lu2O3 was prepared via a combustion route. Its low luminescence efficiency could be dramatically increased through post-fabrication heat-treatment. Infrared spectra showed that the main reason for such a behavior, typical of combustion-made phosphors, was the presence of OH-vibrations in the as-made material. The OH-groups responsible for these vibrations could be completely removed only by heating the materials to at least 1500°C. A simple alteration of the synthesis procedure to assure evaporation of water before the combustion step led to a decrease in the OH-vibration intensities, mirrored by a noticeable increase in the emission efficiency of the resultant powder.
Słowa kluczowe
Combustion synthesis, Lutetium oxide, Terbium luminescence, Nonradiative decay, Infrared spectroscopy
Adres publiczny
https://doi.org/10.1016/S0925-3467(01)00009-X
Strona internetowa wydawcy
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