稀土学报（英文版）
稀土學報（英文版）
희토학보（영문판）
JOURNAL OF RARE EARTHS
2015年
6期
599-603
,共5页
程彦敏%杨正文%廖佳燕%邱建备%宋志国%杨勇
程彥敏%楊正文%廖佳燕%邱建備%宋誌國%楊勇
정언민%양정문%료가연%구건비%송지국%양용
three-dimensional ordered macroporous materials%CeO2:Yb,Er%upconversion emission%color tunability%rare earths
The three-dimensional ordered macroporous CeO2:Yb,Er materials were prepared, and the influence of doping concentra-tion of Yb3+or Er3+ ions on upconversion property was investigated. Green and red upconversion emissions were observed under the excitation of 980 nm at room temperature. It was found that the ratio of red to green upconversion emission intensity increased with increasing of concentration of the Yb3+or Er3+ ions in the three-dimensional ordered macroporous CeO2:Yb,Er materials. When the concentration of Yb3+ was 10 mol.%, pure red upconversion emission was obtained. The varied mechanism of ratio of red to green upconversion emission intensity was discussed with the concentration of Yb3+or Er3+ ions.
