Lanthanide-doped energy cascade nanoparticles : Full spectrum emission by single wavelength excitation
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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Detail(s)
Original language | English |
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Pages (from-to) | 3115-3120 |
Journal / Publication | Chemistry of Materials |
Volume | 27 |
Issue number | 8 |
Online published | 27 Mar 2015 |
Publication status | Published - 28 Apr 2015 |
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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.
Citation Format(s)
Lanthanide-doped energy cascade nanoparticles: Full spectrum emission by single wavelength excitation. / Peng, Dengfeng; Ju, Qiang; Chen, Xian et al.
In: Chemistry of Materials, Vol. 27, No. 8, 28.04.2015, p. 3115-3120.
In: Chemistry of Materials, Vol. 27, No. 8, 28.04.2015, p. 3115-3120.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review