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Inne
Homogeneously precipitated Lu2O3:Eu nanocrystalline phosphor for X-ray detection.
Autorzy
Rok wydania
2005
Czasopismo
Sensors and Actuators B-Chemical
Numer woluminu
109
Strony
112-118
DOI
10.1016/j.snb.2005.03.006
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
Nanocrystalline Lu 2 O 3 doped with 1at.% of Eu was obtained precipitating hydroxide of lutetium with urea at 80°C from water solution and decomposing the hydroxide to oxide at 500°C. Polyvinyl alcohol was used to hinder the particles growth during precipitation. The average size of the fabricated particles was 2–5nm. Although at 500°C the hydroxide decomposed to Eu-doped Lu 2 O 3 traces of OH impurities were present in the material unless heated at 1200°C. Radioluminescence was very poor for samples heated at 800°C or lower temperature. After heating the precipitated powder at or above 1200°C the efficiency jumped 45 times reaching 75% of the output from commercial microcrystalline Gd 2 O 2 S:Eu. The properties make nanocrystalline Lu 2 O 3 :Eu prepared in the described way a promising X-ray phosphor for planar digital medical imaging.
Słowa kluczowe
nanocrystaline phosphor, Lu2O3, Radioluminescence, medical imagining
Adres publiczny
http://doi.org./ 10.1016/j.snb.2005.03.006
Strona internetowa wydawcy
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