Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/28200
Title: Lanthanide-doped energy cascade nanoparticles: Full spectrum emission by single wavelength excitation
Authors: Peng, D
Ju, Q
Chen, X
Ma, R
Chen, B
Bai, G
Hao, J 
Qiao, X
Fan, X
Wang, F
Issue Date: 2015
Publisher: American Chemical Society
Source: Chemistry of materials, 2015, v. 27, no. 8, p. 3115-3120 How to cite?
Journal: Chemistry of materials 
Abstract: We describe the use of a layer-by-layer hierarchical nanostructure to exploit the synergy of different lanthanide ions for converting single wavelength excitation into emissions spanning the whole spectral region. By lining up a set of lanthanide ions with matched energy levels in a core-shell nanostructure, we demonstrate well-defined cascades of energy transfer that gives access to optical emissions from a large collection of lanthanide ions (Tb3+, Eu3+, Dy3+, Sm3+, Nd3+, Yb3+, and Er3+) after excitation into a common sensitizer of Ce3+ featuring a broad absorption. Through optimization of the nanoparticle structure and surface coating, high quantum yields of up to 90% are achieved. Our results highlight that the controlled energy cascades at nanometer scale provide new opportunities for applications such as fighting against counterfeiting and sensing small molecules.
URI: http://hdl.handle.net/10397/28200
ISSN: 0897-4756
DOI: 10.1021/acs.chemmater.5b00775
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