| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1489288 | Materials Research Bulletin | 2013 | 4 Pages |
Color tunable LaCaAl3O7:0.05Ce3+,yTb3+ (LCA:0.05Ce3+,yTb3+) phosphors were synthesized by solid state reaction. The luminescence spectra and the lifetime were investigated in detail. Results confirm that Tb3+ can substitute all La3+ sites without impure phase, and cause luminescence spectra shifting to longer wavelength. Besides, an efficient energy transfer with efficiency over 80% from Ce3+ to Tb3+ was found in the LCA host. Through this efficient energy transfer process, the hues of obtained phosphors changed from blue-white to green light. The results demonstrate its potential of applying in white light-emitting diodes.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Structure of LCA:Ce is investigated by XRD refinement. ► Efficient energy transfer with efficiency >80% was found in the LCA host. ► The dynamic process of energy transfer is studied using decay curves. ► The hues of LCA:Ce,Tb phosphors changed from blue-white to green light.
