Lanthanide-doped energy cascade nanoparticles : Full spectrum emission by single wavelength excitation

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Dengfeng Peng
  • Qiang Ju
  • Ronghua Ma
  • Bing Chen
  • Gongxun Bai
  • Jianhua Hao
  • Xvsheng Qiao
  • Xianping Fan

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)3115-3120
Journal / PublicationChemistry of Materials
Volume27
Issue number8
Online published27 Mar 2015
Publication statusPublished - 28 Apr 2015

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.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review