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Enabling Photon Upconversion and Precise Control of Donor-Acceptor Interaction through Interfacial Energy Transfer.

Bo Zhou1, Long Yan1, Lili Tao2

  • 1State Key Laboratory of Luminescent Materials and Devices and Institute of Optical Communication Materials South China University of Technology Guangzhou 510641 China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
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Summary

A new interfacial energy transfer (IET) strategy enables efficient photon upconversion in lanthanide materials. This method allows fine control over lanthanide interactions, advancing upconversion research.

Keywords:
core–shell nanostructuresinterfacial energy transfermechanistic studiesphoton upconversionspatial control of lanthanides

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Photochemistry

Background:

  • Upconverting materials research is advancing, but mechanistic understanding of lanthanide upconversion strategies remains a challenge.
  • Existing methods like energy-transfer and energy-migration upconversion have limitations in scope and control.

Purpose of the Study:

  • To introduce a novel interfacial energy transfer (IET) strategy for lanthanide photon upconversion.
  • To demonstrate fine control over lanthanide donor-acceptor interactions at the nanoscale.
  • To enable simultaneous upconversion from multiple lanthanide ions.

Main Methods:

  • Utilizing NaYF4- and NaYbF4-based core-shell nanostructures.
  • Implementing an interlayer-mediated nanostructure to establish a physical model for IET.
  • Employing a Nd-Yb coupled sensitizing system for dual-wavelength excitation.

Main Results:

  • Achieved efficient photon upconversion from Er3+, Tm3+, Ho3+, Tb3+, Eu3+, and Dy3+ to Sm3+ using the IET approach.
  • Demonstrated simultaneous upconversion from multiple lanthanides in core-shell nanostructures.
  • Enabled 808/980 nm dual-wavelength excited upconversion from a single particle via IET in a Nd-Yb system.
  • Established a physical model for precise control of lanthanide interactions at the nanometer scale.

Conclusions:

  • The IET strategy offers a new pathway for efficient and controllable lanthanide photon upconversion.
  • This work provides fundamental insights into nanoscale luminescence dynamics involving lanthanides.
  • The findings pave the way for novel scientific concepts and precise control of upconversion at the single-ion level.