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Updated: Mar 24, 2026
Synthesis of Core-shell Lanthanide-doped Upconversion Nanocrystals for Cellular Applications
Published on: November 10, 2017
Nonlinear spectral and lifetime management in upconversion nanoparticles by controlling energy distribution
Yu Wang1, Renren Deng1, Xiaoji Xie2
1Department of Chemistry, National University of Singapore, Singapore 117543, Singapore. chmlx@nus.edu.sg.
Researchers developed a method to tune lanthanide-doped upconversion nanoparticles by modifying their nonlinear optical properties. This enhances their sensitivity for advanced applications in imaging and energy conversion.
Area of Science:
- Materials Science
- Nanotechnology
- Optics
Background:
- Lanthanide-doped upconversion nanoparticles (UCNPs) are crucial for energy conversion, materials science, and biological imaging.
- Tuning UCNP properties is essential for advancing these fields.
Purpose of the Study:
- To present a rational approach for manipulating the spectral profile and lifetime of lanthanide emission in UCNPs.
- To tailor the nonlinear optical properties of UCNPs.
Main Methods:
- Incorporating energy distributors (surface defects or extra dopants) into rare-earth-based host lattices.
- Altering the decay behavior of excited sensitizers within the UCNPs.
Main Results:
- Demonstrated marked improvement in emitter sensitivity to excitation power.
- Successfully manipulated spectral profiles and emission lifetimes of lanthanide emission.
Conclusions:
- The study provides mechanistic insights into UCNP upconversion phenomena.
- Enables new opportunities for nanomaterials in photonic applications.
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