Probing and Understanding the Spatial and Energy Distributions of Plasmonic Hot Carriers via Single-Molecule Quantum Transport
Abstract
The generation of hot carriers in plasmonic nanostructures (PN) offers new transformative opportunities for a range of applications, including solar energy harvesting, photochemistry, and photodetection.To better understand such phenomena, this project aims to develop an experimental approach for studying and understanding hot carrier distributions in photoexcited plasmonic nanostructures.The proposed experimental approach, combining scanning probe-based single-molecule quantum transport measurements with plasmonic excitation methods, leverages the intrinsic quantum properties of nanoscopic single molecules as energy filters to selectively access hot carriers in a variety of plasmonic nanostructures.This report summarizes the key outcomes, impacts, and lessons learned in the first two years of the five-year project.The execution of this project is closed at Mississippi State University (MSU) due to the move of the principal investigator to University of Miami (UM).Over the project period from August 1, 2021 to August 15, 2023, important progress was made in achieving the project's goals, including the development of the scanning probe-based experimental platform, design and synthesis of the desired molecular candidates, and fabrication of plasmonic nanostructures.Insights from this research will offer unique opportunities for the development of technologies that will help transition the U.S. to a clean and sustainable society. AccomplishmentsThe objective of this grant was…
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