Manipulation of excitation dynamics in a core/multi-shell geometry. (IMAGE)

Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

Manipulation of excitation dynamics in a core/multi-shell geometry.

Caption

a) Main luminescent transitions of the lanthanide activators in the electromagnetic spectrum, spanning from UV to visible then extending to second near-infrared. b) XEOL, XEPL, DS and UC processes in lanthanide-doped fluoride NSs. c) Schematic illustration of the multimode color evolution based on fluoride core@shell@shell NSs. P represents excitation power. When different lanthanide activators generate diverse emission wavelengths of XEOL, UC and DS in a designed core@shell@shell NSs, plentiful multicolors can be modulated on demand by controlling the excitation wavelength and/or power.

Credit

by Lei Lei, Yubin Wang, Andrey Kuzmin, Youjie Hua, Jingtao Zhao, Shiqing Xu and Prasad N. Paras

Usage Restrictions

Credit must be given to the creator.

License

CC BY

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