研究目的
To review the physical principles and recent advances in plasmon-enhanced upconversion luminescence, including mechanisms and various experimental cases.
研究成果
Plasmon-enhanced upconversion luminescence is significantly enhanced through excitation and emission mechanisms, with factors like metal nanostructure design, distance control, and spacer optimization playing crucial roles. The field shows promise for applications in photovoltaics and bioimaging, but further research is needed to overcome limitations and optimize enhancements.
研究不足
The review is limited to summarizing existing studies and does not present new experimental data; it highlights challenges such as low quantum efficiency, limited NIR light harvesting, and uncontrollable nonradiative processes in upconversion materials.
1：Experimental Design and Method Selection:
The review discusses theoretical models based on quantum electrodynamics, including Hamiltonian and rate equations for electronic transitions and energy transfer.
2：Sample Selection and Data Sources:
Various nanostructures such as metal films, core-shell nanocrystals, plasmonic arrays, and metal tips are reviewed, with data from cited literature.
3：List of Experimental Equipment and Materials:
Includes noble metals (e.g., Au, Ag), upconversion nanocrystals (e.g., NaYF4:Yb,Er), spacers (e.g., SiO2, Al2O3), and excitation sources (e.g., 980 nm lasers).
4：Experimental Procedures and Operational Workflow:
Describes synthesis methods (e.g., spin-casting, core-shell fabrication), coupling techniques, and measurement of luminescence enhancement and decay times.
5：Data Analysis Methods:
Involves spectral analysis, enhancement factor calculations, and simulations using dyadic Green functions and Purcell factors.
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