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High pressure studies of luminescence efficiency and lifetime in La2O2S:Eu and Y2O2S:Eu

โœ Scribed by Webster, G.; Drickamer, H. G.

Book ID
126725026
Publisher
American Institute of Physics
Year
1980
Tongue
English
Weight
770 KB
Volume
72
Category
Article
ISSN
0021-9606

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The vacuum ultraviolet excitation spectrum and visible luminescence spectra of Y 2 O 2 S:Eu 3+ (10 at.%) and Eu 2 O 2 S are reported and assigned. Excitation bands peaking at 312 nm (3.97 eV) and 244 nm (5.08 eV) are assigned to S-3p and O-2p to Eu 3+ charge transfer absorptions. The bands peaking a