Elimination of photon quenching by a transition layer to fabricate a quenching-shield sandwich structure for 800 nm excited upconversion luminescence of Nd3+-sensitized nanoparticles

Yeteng Zhong, Gan Tian, Zhanjun Gu, Yijun Yang, Lin Gu, Yuliang Zhao, Ying Ma, Jiannian Yao

Research output: Contribution to journalArticle

293 Scopus citations

Abstract

Nd3+-sensitized quenching-shield sandwich-structured upconversion nanoparticles are reported, which exhibit highly efficient upconversion photoluminescence under excitation by an 800 nm continuous-wave laser. The transition-layer structure is essential to bridge energy transfer from the sensitizer to the activator and simultaneously block energy back-transfer from the activator to the sensitizer. These 800 nm-excited upconversion nanoparticles are a key step toward the development of upconversion nanophosphors for biological applications.

Original languageEnglish (US)
Pages (from-to)2831-2837
Number of pages7
JournalAdvanced Materials
Volume26
Issue number18
DOIs
StatePublished - May 14 2014

Keywords

  • excitation
  • quenching effects
  • quenching-shield sandwich structures
  • transition layers
  • upconversion

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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