AI Article Synopsis
- The study introduces a two-step method for synthesizing novel upconversion materials, specifically Lu5O4F7:Er(3+),Yb(3+) nano/micro-crystals, which exhibit enhanced upconversion properties.
- The researchers explore how the size and shape of these nanoparticles affect their upconversion abilities, revealing that smaller particles may experience surface quenching effects and alterations in phonon modes.
- The resulting nanoparticles are biocompatible and demonstrate a strong single-band red upconversion, indicating their potential use in biomedical applications.
Article Abstract
In this work, we present a two-step method to controllably synthesize novel and highly efficient upconversion materials, Lu5O4F7:Er(3+),Yb(3+) nano/micro-crystals, and investigate their size/morphology induced tunable upconversion properties. In addition to the common phenomenon aroused by a surface quenching effect, direct experimental evidence for the regulation of phonon modes is obtained in nanoparticles. The findings in this work advance the existing mechanisms for the general explanation of size/morphology induced upconversion features. Because of the adjustment of phonon energy and density as well as the surface quenching effect, the biocompatible Lu5O4F7:Er(3+),Yb(3+) nanoparticles exhibit an ultra-strong single-band red upconversion, rendering them promising for biomedical applications.
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| http://dx.doi.org/10.1039/c5nr01008j | DOI Listing |
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