authors |
Relvas, MS; Soares, MRN; Pereira, SO; Girao, AV; Costa, PM; Monteiro, T |
nationality |
International |
journal |
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS |
author keywords |
Chromium-doped zinc gallate nanostructures; Persistent luminescence; Pulsed laser ablation in liquid medium |
keywords |
PERSISTENT LUMINESCENT NANOPARTICLES; PROMISING FLUORESCENT-PROBE; IN-VIVO; SPINEL OXIDES; N-LINES; SPECTRA; IONS; AFTERGLOW; DISORDER; PHOSPHOR |
abstract |
In the present study, the pulsed laser ablation in water technique was used to produce chromium-doped ZnGa2O4 nanostructures from a sintered pellet target. The materials obtained mainly comprised the cubic spinel crystalline structure of ZnGa2O4 and the monoclinic beta-Ga2O3 as a minority phase (3%). Intra-ionic Cr3+ red luminescence from the ions in the spinel structure was the dominant recombination process in the bulk target and nanostructures. Overlapping of the Cr-related emitting centers was identified and the samples exhibited persistent red luminescence, which is of interest for bioimaging. Moreover, the temperature-dependent luminescence demonstrated the versatility of the nanostructures obtained, which can be further explored as temperature sensors based on the low energy shift of the zero phonon line peak positions as the temperature increased. |
publisher |
PERGAMON-ELSEVIER SCIENCE LTD |
issn |
0022-3697 |
isbn |
1879-2553 |
year published |
2019 |
volume |
129 |
beginning page |
413 |
ending page |
423 |
digital object identifier (doi) |
10.1016/j.jpcs.2019.01.022 |
web of science category |
Chemistry, Multidisciplinary; Physics, Condensed Matter |
subject category |
Chemistry; Physics |
unique article identifier |
WOS:000466250300050
|