ArticleACS nano2021
Unraveling the Ultrafast Hot Electron Dynamics in Semiconductor Nanowires.
Article in ACS nano, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Interfacial Role of DopantNanophotonics (Berlin, Germany) · 2026Article
- Ultrafast Near-Field Dynamics in Silver Nanowires Driven by Few-Cycle Short-Wave Infrared Pulses.ACS photonics · 2026Article
- Direct on-Chip Optical Communication between Nano Optoelectronic Devices.ACS photonics · 2025Article
- Sub-100 fs Formation of Dark Excitons in Monolayer WSNano letters · 2024Article
- Picosecond carrier dynamics in InAs and GaAs revealed by ultrafast electron microscopy.Science advances · 2024Article
- Strong Dimensional and Structural Dependencies of Hot Carrier Effects in InGaAs Nanowires: Implications for Photovoltaic Solar Cells.ACS applied nano materials · 2024Article
- Sub-Picosecond Carrier Dynamics Explored using Automated High-Throughput Studies of Doping Inhomogeneity within a Bayesian Framework.Small (Weinheim an der Bergstrasse, Germany) · 2023Article
- Article
- Optical-Beam-Induced Current in InAs/InP Nanowires for Hot-Carrier Photovoltaics.ACS applied energy materials · 2022Article
Corrections and comments
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Hot electron relaxation and transport in nanostructures involve a multitude of ultrafast processes whose interplay and relative importance are still not fully understood, but which are relevant for future applications in areas such as photocatalysis and optoelectronics. To unravel these processes, their dynamics in both time and space must be studied with high spatiotemporal resolution in structurally well-defined nanoscale objects. We employ time-resolved photoemission electron microscopy to image the relaxation of photogenerated hot electrons within InAs nanowires on a femtosecond time scale. We observe transport of hot electrons to the nanowire surface within 100 fs caused by surface band bending. We find that electron-hole scattering substantially influences hot electron cooling during the first few picoseconds, while phonon scattering is prominent at longer time scales. The time scale of cooling is found to differ between the well-defined wurtzite and zincblende crystal segments of the nanowires depending on excitation light polarization. The scattering and transport mechanisms identified will play a role in the rational design of nanostructures for hot-electron-based applications.
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