A5023394477- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Nanocluster Synthesis and Applications
- Molecular Junctions and Nanostructures
- Plasmonic and Surface Plasmon Research
- Copper-based nanomaterials and applications
- Semiconductor Quantum Structures and Devices
- Electrocatalysts for Energy Conversion
- Strong Light-Matter Interactions
- CO2 Reduction Techniques and Catalysts
University of North Carolina at Chapel Hill
2021-2024
Quantum dots (QDs) are semiconductor nanocrystals with optical properties that can be tuned through postsynthetic ligand exchanges. Importantly, the stability of QD surfaces in optoelectronic devices is influenced by shell composition and structure exchange ligand. QDs incorporated into such frequently exposed to excess electronic charges localize at surface via doping, charge hopping, etc. However, changes reactivity upon reduction as a function not well understood. In this work, we...
ConspectusMany desirable and undesirable properties of semiconductor nanocrystals (NCs) can be traced to the NC surface due large surface-to-volume ratio. Therefore, precise control is imperative achieve NCs with desired qualities. Ligand-specific reactivity heterogeneity make it difficult accurately tune surface. Without a molecular-level appreciation chemistry, modulating impossible risk introducing deleterious defects imminent. To gain more comprehensive understanding reactivity, we have...
This work reports in-situ (active) electrochemical control over the coupling strength between semiconducting nanoplatelets and a plasmonic cavity. We found that by applying reductive bias to an Al nanoparticle lattice working electrode, number of CdSe nanoplatelet emitters can couple cavity is decreased. Strong be reversibly recovered discharging at oxidative potentials relative conduction band edge reduction potential emitters. By correlating electrons added or removed with measured...
This work reports in situ (active) electrochemical control over the coupling strength between semiconducting nanoplatelets and a plasmonic cavity. We found that by applying reductive bias to an Al nanoparticle lattice working electrode number of CdSe nanoplatelet emitters can couple cavity is decreased. Strong be reversibly recovered discharging at oxidative potentials relative conduction band edge reduction potential emitters. By correlating electrons added or removed with measured...
(Photo)electrochemical CO 2 reduction (CO R) has been of great interest not only for its promising route to economic, transportable, storable, and sustainable fuels,but also the fundamental study factors that impact identity reaction product(s). Among such well-behaved catalytic systems, pentamethylcyclopentadienyl-ligated Ir(III) half-sandwich complex with 2,2’-bipyridine derivatives is a representative class both electrochemical photochemical R catalysis reported. However,...