کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1459910 | 989599 | 2015 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Enhanced upconversion emission of three dimensionally ordered macroporous films Bi2Ti2O7:Er3+, Yb3+ with silica shell Enhanced upconversion emission of three dimensionally ordered macroporous films Bi2Ti2O7:Er3+, Yb3+ with silica shell](/preview/png/1459910.png)
In this paper, a simple effective approach has been developed to enhance upconversion emission of three-dimensionally ordered macroporous materials, which is attributed to formation of silica shell around surface of three-dimensionally ordered macroporous materials. This approach involves the preparation of Bi2Ti2O7:Er3+, Yb3+ three-dimensionally ordered macroporous materials and the formation of amorphous SiO2 shell on the macroporous surfaces of three-dimensionally ordered macroporous materials. The influence of silica shell on the upconversion emission of Er3+ ions was investigated, and the enhanced upconversion emission was observed in the Bi2Ti2O7:Er3+, Yb3+ three-dimensionally ordered macroporous materials owing to the suppression of surface quenching effect caused by the formation of silica shells.
Journal: Ceramics International - Volume 41, Issue 9, Part B, November 2015, Pages 11770–11775