| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1495749 | Optical Materials | 2012 | 4 Pages |
The optical properties of Eu-activated CaAl2Si2O8 appear to be totally dependent on the atmosphere during the synthesis processing. Compared with oxidizing/reducing-sintered samples, a significant enhancement in both the photoluminescence and afterglow for the vacuum-sintered sample is observed. The deficiency of energy transfer among the different emission centers is the prevailing contribution to the highest photoluminescence intensity of the vacuum-sintered sample. A distinction in afterglow characteristics of CaAl2Si2O8:Eu prepared in different atmosphere is suggested to be mainly due to the distribution of different trap depths at three types of emission centers.
Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (158 K)Download as PowerPoint slideHighlights► Optical properties of CaAl2Si2O8:Eu prepared in different atmosphere were different. ► Vacuum sintered CaAl2Si2O8:Eu exhibited enhanced photoluminescence intensity. ► The afterglow properties were improved of vacuum sintered CaAl2Si2O8:Eu.
