Author/Authors :
Nikl، نويسنده , , M. and Ogino، نويسنده , , H. and Yoshikawa، نويسنده , , A. and Mihokova، نويسنده , , E. and Pejchal، نويسنده , , J. and Beitlerova، نويسنده , , Alexander A. and Novoselov، نويسنده , , A. and Fukuda، نويسنده , , T.، نويسنده ,
Abstract :
Absorption and photoluminescence spectra including the decay kinetics of the Pr3+-doped Lu2SiO5 were measured. Fast luminescence originating from the radiative 5d → 4f transition of Pr3+ center is revealed with the maximum at 273 nm at room temperature. Low temperature photoluminescence decay is governed by the 25 ns decay, while substantial shortening to 6–7 ns occurs at room temperature. With the help of slow decay measurement in the millisecond time scale we evidence the thermal ionization of the relaxed excited 5d1 state of Pr3+. The ionization can explain the observed temperature dependences of the decay times and emission intensity.
