Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5403972 | Journal of Luminescence | 2007 | 5 Pages |
Abstract
Transient response of the dielectric permittivity of dielectric powder of LSO:Ce3+ under pulsed laser excitation were recorded by the 8-mm microwave resonator technique at room temperature. The signal in absorption mode is the signature of Ce3+ photoionization and photoconductivity effect in the rare-earth-doped dielectric grains. The signal in dispersion mode results from surface defects around each grain leading to electronic traps. This opens new perspectives for photoconductivity measurements on rare-earth-doped insulating nanopowders.
Related Topics
Physical Sciences and Engineering
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Physical and Theoretical Chemistry
Authors
H. Loudyi, Y. Guyot, J.-C. Gâcon, C. Pédrini, M.-F. Joubert,