Enhanced upconversion emission of three dimensionally ordered macroporous films Bi₂Ti₂O₇:Er³⁺, Yb³⁺ with silica shell
Date
2015
Authors
Cun, Y.
Yang, Z.
Li, J.
Shao, B.
Yang, J.
Wang, Y.
Qiu, J.
Song, Z.
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Journal article
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Ceramics International, 2015; 41(9, part B):11770-11775
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Abstract
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.
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