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Inne
Analysis of Eu3+ emission from different sites in Lu2O3.
Autorzy
Rok wydania
2002
Czasopismo
Journal of Alloys and Compounds
Numer woluminu
341
Strony
381-384
DOI
10.1016/S0925-8388(02)00042-7
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
Lu2O3 doped with Eu of varying concentrations was prepared using a convenient combustion technique. Emissions from two different crystallographic sites, C2 and S6, were found and analyzed. Using various spectroscopic techniques, luminescence of Eu3+ exclusively from site C2 or site S6 could be detected. Kinetics of both emissions was characterized and time constants of 1.5 and 4.3 ms were found, respectively. Energy transfer from Eu3+ in site S6 to Eu3+ in site C2 was proved to take place when the dopant content reaches about 1% or higher. For rising activator concentration the transfer becomes more efficient and for heavily doped samples the emission from S6 site lasts in a vestige form only. The only emission transitions detected from Eu in centrosymmetric site S6 were the 5D0–7F1 three-line band.
Adres publiczny
https://doi.org/10.1016/S0925-8388(02)00042-7
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