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Efficient monodisperse upconversion composite prepared using high-density local field and its dual-mode temperature
Huilin Li1,2, Kai Zhao1, Xiaoyan Liu1
1School of Physics and Electronic Science, Hunan University of Science and Technology, Xiangtan, 411201, China.
Physical Chemistry Chemical Physics : PCCP
|February 14, 2024
Summary
We developed a highly efficient, monodisperse metal-dielectric-metal hybrid material for enhanced upconversion. This breakthrough promises advanced biosensors and solution-processed solar cells.
Area of Science:
- Nanotechnology
- Materials Science
- Photonics
Background:
- Conventional plasmonic configurations for enhanced upconversion face challenges in balancing enhancement factors and monodispersity.
- Existing materials struggle to meet the demands for *in vivo* biosensors and all-solution-processed solar cells.
Purpose of the Study:
- To report a novel monodisperse metal-dielectric-metal (MDM) type upconverted hybrid material with high efficiency.
- To demonstrate the potential of this material for advanced biosensing and solar cell applications.
Main Methods:
- Synthesizing lanthanide-doped upconversion nanoparticles (UCNPs) sandwiched between two gold nanodisk mirrors.
- Utilizing localized excitation fields and efficient coupling to enhance upconversion.
- Characterizing the material's performance and demonstrating a dual-mode nanothermometer.
Main Results:
- Achieved a three to four orders of magnitude increase in upconversion intensity.
- Demonstrated a monodisperse MDM hybrid material with high efficiency.
- Successfully developed a dual-mode nanothermometer based on the hybrid material.
Conclusions:
- The developed MDM-type upconverted hybrid material offers high efficiency and monodispersity.
- This material shows significant promise for *in vivo* biosensors and scalable solar cell fabrication techniques like spin-coating and roll-to-roll.
