纳米结构
镧系元素
能量转移
壳体(结构)
材料科学
芯(光纤)
光子
纳米技术
原子物理学
物理
光学
复合材料
离子
量子力学
作者
Bo Zhou,Lili Tao,Yang Chai,Shu Ping Lau,Qinyuan Zhang,Yuen Hong Tsang
标识
DOI:10.1002/anie.201604682
摘要
Abstract We report a new mechanistic strategy for controlling and modifying the photon emission of lanthanides in a core–shell nanostructure by using interfacial energy transfer. By taking advantage of this mechanism with Gd 3+ as the energy donor, we have realized efficient up‐ and down‐converted emissions from a series of lanthanide emitters (Eu 3+ , Tb 3+ , Dy 3+ , and Sm 3+ ) in these core–shell nanoparticles, which do not need a migratory host sublattice. Moreover, we have demonstrated that the Gd 3+ ‐mediated interfacial energy transfer, in contrast to energy migration, is the leading process contributing to the photon emission of lanthanide dopants for the NaGdF 4 @NaGdF 4 core–shell system. Our finding suggests a new direction for research into better control of energy transfer at the nanometer length scale, which would help to stimulate new concepts for designing and improving photon emission of the lanthanide‐based luminescent materials.
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