Department Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong SAR, China.
Dalton Trans. 2018 Jul 14;47(26):8581-8584. doi: 10.1039/c8dt00218e. Epub 2018 Feb 26.
A core-shell-shell nanostructure composed of NaGdF:Yb/Tm@NaGdF:Nd@NaYF is developed to realize Yb-sensitized upconversion and downshifting luminescence in Nd ions. The unusual photon conversion property stems from a gadolinium sublattice mediated Yb→ Tm→ Gd→ Nd energy transfer pathway. The energy transfer processes are investigated by varying the dopant concentration and distribution, in conjunction with time decay measurements.
一种核壳壳结构的纳米结构，由 NaGdF:Yb/Tm@NaGdF:Nd@NaYF 组成，用于实现 Yb 敏化上转换和 Nd 离子的下转换发光。这种不寻常的光子转换特性源于钆亚晶格介导的 Yb→Tm→Gd→Nd 能量传递途径。通过改变掺杂浓度和分布，并结合时间衰减测量，研究了能量传递过程。
