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Fluorophore-Induced Plasmonic Current Generation from Copper Nanoparticle Films
Daniel R Pierce1, Lahari Saha1, Chris D Geddes1
1Institute of Fluorescence, and Department of Chemistry and Biochemistry, University of Maryland, Baltimore County, 701 E Pratt St, Baltimore, Maryland 21202, United States.
ACS Omega
|June 17, 2024
Summary
Copper nanoparticle films can generate fluorophore-induced plasmonic current (FIPC). This study explores copper
Area of Science:
- Plasmonics
- Nanomaterials
- Optoelectronics
Background:
- Excited near-field fluorophores couple with metal nanoparticle films (MNFs) to induce surface plasmons.
- These surface plasmons generate measurable electrical currents in noble metal films (Ag, Au).
- Cost-effective alternatives to noble metals are sought for FIPC generation.
Purpose of the Study:
- To investigate the potential of copper nanoparticle films for generating fluorophore-induced plasmonic current (FIPC).
- To analyze the influence of various parameters on FIPC generation in copper films.
Main Methods:
- Fabrication of thermally deposited copper nanoparticle films.
- Exposure of copper films to excited near-field fluorophores.
- Systematic variation of copper film thickness, light polarization, and solution conductance.
- Measurement of generated plasmonic current and metal-enhanced fluorescence (MEF) emission.
Main Results:
- Copper films demonstrate the ability to generate FIPC.
- Copper film thickness significantly impacts FIPC generation.
- Light polarization and solution conductance influence plasmonic current.
- Metal-enhanced fluorescence (MEF) emission correlates with FIPC.
Conclusions:
- Thermally deposited copper nanoparticle films are a viable, lower-cost alternative for FIPC generation.
- Optimizing film thickness, polarization, and solution conditions can enhance FIPC.
- Copper-based FIPC systems show promise for optoelectronic applications.
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