The optical and electrical properties in Nd3+ doped lead tungstate single crystals
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The influence of Nd3+ doping with different concentration on the luminescence properties of PbWO4 single crystals were investigated by means of the thermo-luminescence, X-ray excited luminescence and photoluminescence spectra. Nd3+ doping has almost the same doping effects as that of La3+ doping in PbWO4. The doping mechanism of Nd3+ was briefly discussed. Dielectric loss spectroscopy and conductibility were measured when the PbWO4:Nd3+ single crystals were sequentially annealed in air atmosphere from 100 °C to 1000 °C. The heavily Nd3+-doped PbWO4 present a larger conductivity at the high temperature with low activation energy.
KeywordsScheelite Glow Curve Cherenkov Radiator Raman Laser Lead Tungstate
Financial support by Korea Research Foundation Grant (KRF-2002-070-C00042) is appreciated. This work was also supported by the Pukyong National University Research Fund (PK-2006-025).