Abstract
Transparent glass-ceramics containing β-Ga2O 3:Ni2+ nanocrystals were synthesized and characterized by X-ray diffraction, transmission electron microscopy, and electron energy loss spectroscopy. Intense broad-band luminescence centering at 1200 nm was observed when the sample was excited by a diode laser at 980 nm. The room-temperature fluorescent lifetime was 665 μs, which is longer than the Ni 2+-doped ZnAl2O4 and LiGa5O 8 glass-ceramics and is also comparable to the Ni2+-doped LiGa5O8 single crystal, The intense infrared luminescence with long fluorescent lifetime may be ascribed to the high crystal field hold by Ni2+ and the moderate lattice phonon energy of β-Ga 2O3. The excellent optical properties of this novel material indicate that it might be a promising candidate for broad-band amplifiers and room-temperature tunable lasers.
| Original language | English |
|---|---|
| Pages (from-to) | 7335-7338 |
| Number of pages | 4 |
| Journal | Journal of Physical Chemistry C |
| Volume | 111 |
| Issue number | 20 |
| DOIs | |
| State | Published - 24 May 2007 |
| Externally published | Yes |