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

Dengfeng Peng, Qiang Ju, Xian Chen, Ronghua Ma, Bing Chen, Gongxun Bai, Jianhua Hao, Xvsheng Qiao, Xianping Fan, Feng Wang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

67 Citations (Scopus)

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.
Original languageEnglish
Pages (from-to)3115-3120
Number of pages6
JournalChemistry of Materials
Volume27
Issue number8
DOIs
Publication statusPublished - 28 Apr 2015

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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