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Related Experiment Video

Updated: Dec 11, 2025

Synthesis of Core-shell Lanthanide-doped Upconversion Nanocrystals for Cellular Applications
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Binary Nanoparticle Superlattices for Plasmonically Modulating Upconversion Luminescence.

Kerong Deng1, Lili Xu2, Xin Guo3

  • 1Department of Chemistry, Shenzhen Engineering Research Center for Frontier Materials Synthesis at High Pressures, Southern University of Science and Technology (SUSTech), Shenzhen, Guangdong, 518055, P. R. China.

Small (Weinheim an Der Bergstrasse, Germany)
|August 21, 2020
PubMed
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This summary is machine-generated.

Researchers developed a new method to control the light emission of lanthanide-doped upconversion nanoparticles (UCNPs). By assembling UCNPs with gold nanoparticles into ordered superlattices, they achieved tunable upconversion luminescence (UCL) for advanced optical applications.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Optics

Background:

  • Controlling spectral properties of lanthanide-doped upconversion nanoparticles (UCNPs) remains a significant challenge.
  • Upconversion luminescence (UCL) modulation is crucial for various optical applications.

Purpose of the Study:

  • To engineer a facile and controllable approach for modulating UCNP spectral properties.
  • To achieve plasmonic modulation of UCL using binary nanoparticle superlattices (BNSLs).

Main Methods:

  • Fabrication of 2D binary nanoparticle superlattices (BNSLs) using NaREF4:Yb/Er (RE = Y and Gd) UCNPs and gold nanoparticles (Au NPs).
  • Utilized a slow evaporation-driven self-assembly technique.
  • Investigated different lattice configurations (AB, AB3, and AB13).
Keywords:
binary superlatticesnanoparticlesplasmonic modulationself-assemblyupconversion

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Main Results:

  • Demonstrated effective modulation of red-green UCL to reddish output in BNSLs, with a shortened lifetime.
  • Observed modified UCL with fine-structured spectral lineshapes in AB3- and AB13-type BNSLs due to proximal Au NPs.
  • Interpreted results by the interplay of collective plasmon resonance and spectrally selective energy transfer.

Conclusions:

  • Fabricating UCNP-Au BNSLs with controlled lattice parameters and NP configurations offers a promising pathway for tailoring UCL.
  • This approach enables precise control over upconversion luminescence through plasmonic modulation.
  • The findings pave the way for developing novel optical materials with tunable emission properties.