Toward Upconversion Luminescence Enhancement with Dye Sensitization

Xiaomeng Liu, Tongtong Liu, Yansong Feng*, Chang Jiang Yao*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

2 Citations (Scopus)

Abstract

Upconversion nanoparticles (UCNPs) containing lanthanide have attracted considerable attention in the applications of bioimaging, phototherapy, biosensing, solar cells, etc., because of their unique large anti-Stokes luminescence. However, the low upconversion luminescence (UCL) efficiency due to the narrow and weak absorption of lanthanide ions fundamentally restricts their applications. Sensitized UCNPs with dyes are expected to break this limitation, which could yield to 5 orders of magnitude UCL enhancement. The strategy of dye-sensitized UCNPs has broadened upconversion excitation bands, where the dyes efficiently harvest near-infrared light and transfer the energy to lanthanide ions. Benefiting from the sensitizing process of dyes, the brightness was enhanced by 1000 times. In this paper, we summarize the most recent advances on sensitized UCNPs with an antenna effect from different dyes, with an emphasis on the sensitization mechanism and the geometric classification of the dyes. In addition, the perspectives and challenges of sensitized UCNPs are also discussed.

Original languageEnglish
Pages (from-to)1733-1750
Number of pages18
JournalACS Applied Optical Materials
Volume2
Issue number9
DOIs
Publication statusPublished - 27 Sept 2024

Keywords

  • dye sensitization
  • inorganic−organic hybridization
  • luminescence enhancement
  • rare-earth-doped nanoparticles
  • upconversion

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