Highly enhanced upconversion luminescence in lanthanide-doped active-core/luminescent-shell/active-shell nanoarchitectures

作者：Ding, Mingye; Chen, Daqin^*; Ma, Danyang; Dai, Jianbin; Li, Yuting; Ji, Zhenguo

来源：Journal of Materials Chemistry C, 2016, 4(13): 2432-2437.

DOI：10.1039/c6tc00163g

• NEAR-INFRARED LIGHT
• ENERGY MIGRATION
• CORE/SHELL NANOPARTICLES
• DRUG-DELIVERY
• CORE
• NANOCRYSTALS
• STRATEGY
• EMISSION
• DESIGN
• MULTICOLOR

We reported a new strategy to remarkably improve upconversion luminescence of Ln(3+)-doped nanoparticles via an active-core/luminescent-shell/active-shell engineering technique. By optimization of the structure of a NaGdF4:Yb@NaYF4:Yb/Er@NaGdF4:Yb sandwich-like nanoarchitecture, a significant enhancement of upconversion emission intensity was realized with the help of the synergistic actions of the suppression of Er-defect energy transfer and the efficient energy transfer from Yb3+ in both active-core and active-shell to Er3+ in the luminescent-shell layer.

• 出版日期2016
• 单位杭州电子科技大学