Upconversion luminescence properties of three-dimensional ordered macroporous CeO₂: Er³⁺, Yb³⁺

详细信息    查看全文

• 作者：Hangjun Wu ; Zhengwen Yang ; Jiayan Liao ; Shenfeng Lai ; Jianbei Qiu ; Zhiguo Song ; Yong Yang ; Dacheng Zhou ; Zhaoyi Yin
• 关键词：Sol&ndash ; gel preparation ; Optical materials and properties ; Luminescence ; Upconversion emission
• 刊名：Journal of Alloys and Compounds
• 出版年：15 February, 2014
• 年：2014
• 卷：586
• 期：Complete
• 页码：485-487
• 全文大小：662 K

文摘

Three-dimensional ordered macroporous (3DOM) Er³⁺, Yb³⁺ co-doped CeO₂ and powder samples were prepared. The phase of the 3DOM sample was confirmed by XRD, and upconversion (UC) luminescence property was investigated. The results showed that green (527 nm, 548 nm) and red (659 nm) emission bands were observed in the 3DOM and powder samples under a 980 nm excitation at room temperature. It is interesting that the relative intensity of the red to green emission in the 3DOM sample increased in comparison with that of powder sample due to the increased non-radiative relaxation from ⁴I_11/2 to ⁴I_13/2 state in the 3DOM materials.