First photoconductivity measurement following photoionization of rare-earth dopant in a dielectric powder |
| |
Authors: | H Loudyi |
| |
Institution: | Laboratoire de Physico-Chimie des Matériaux Luminescents, UMR 5620 CNRS, Université de Lyon 1, 69622 Villeurbanne Cedex, France |
| |
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. |
| |
Keywords: | 78 20 78 40 42 70 |
本文献已被 ScienceDirect 等数据库收录! |
|