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Related Experiment Video

Updated: Apr 13, 2026

Low-energy Cathodoluminescence for OxyNitride Phosphors

Low-energy Cathodoluminescence for OxyNitride Phosphors

Published on: November 15, 2016

Interactions in Rare-Earth-Doped Nanoparticles: A Multi-Transition, Concentration, and Excitation Path Analysis.

Pauline Perrin¹, Luiz Fernando Dos Santos^1,2, Alexandre Hebbrecht¹

¹Chimie ParisTech, PSL University, CNRS, Institut de Recherche de Chimie Paris 75005 Paris, France.

|April 11, 2026

Summary

Researchers modeled energy transfer in rare-earth-doped Y₂O₃ nanoparticles. This work offers insights for optimizing luminescent nanomaterials for applications like bioimaging and lasers.

Keywords:

Y2O3 Yb,Er interactions luminescence decays multi-transition nanoparticles rare-earth ions up-conversion modeling

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Synthesis of Core-shell Lanthanide-doped Upconversion Nanocrystals for Cellular Applications

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Published on: November 10, 2017

Area of Science:

Materials Science
Nanotechnology
Photonics

Background:

Rare-earth-doped nanomaterials are crucial for advanced technologies like bioimaging, optical thermometry, and lasers.
Understanding energy transfer is key to optimizing their luminescent properties.

Purpose of the Study:

To investigate the photoluminescence dynamics of Yb³⁺ and Er³⁺ ions in Y₂O₃ nanoparticles.
To develop a predictive model for energy transfer across a wide concentration range.

Main Methods:

Measured luminescence decays under direct and up-conversion excitation.
Analyzed data using a rate equation model including radiative, non-radiative, energy transfer, and defect quenching processes.
Determined model parameters through specific measurements.

Main Results:

Successfully reproduced experimental trends across various concentrations and excitation paths.
Validated a unified modeling approach for energy transfer in rare-earth-doped materials.
Identified key factors influencing photoluminescence dynamics.

Conclusions:

The developed model provides a sound framework for understanding energy transfer in nanostructured rare-earth-doped materials.
Offers valuable insights for optimizing photoluminescent properties for technological applications.
Demonstrates the importance of considering multiple processes in luminescence decay analysis.