ArticleNature chemistry2023
Hydrogen atom collisions with a semiconductor efficiently promote electrons to the conduction band.
Article in Nature chemistry, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- The Different Levels of Quantum: A Methodological-Philosophical Portrait of Computational Quantum Chemistry.ACS physical chemistry Au · 2026Review
- Synthesis and Photocatalytic Evaluation of CoPc/g-CMolecules (Basel, Switzerland) · 2026Article
- Dynamics of collision-induced energy transfer.Fundamental research · 2025Review
- Mechanistic Insights into Nonadiabatic Interband Transitions on a Semiconductor Surface Induced by Hydrogen Atom Collisions.JACS Au · 2024Article
- Vibrationally Mode-Specific Molecular Energy Transfer to Surface Electrons in Metastable Formaldehyde Scattering from Cesium-Covered Au(111).The journal of physical chemistry. A · 2024Article
- Mysterious energy losses.Nature chemistry · 2023Article
Corrections and comments
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Authors and funding
11 authors.
Funding
Abstract
The Born-Oppenheimer approximation is the keystone of modern computational chemistry and there is wide interest in understanding under what conditions it remains valid. Hydrogen atom scattering from insulator, semi-metal and metal surfaces has helped provide such information. The approximation is adequate for insulators and for metals it fails, but not severely. Here we present hydrogen atom scattering from a semiconductor surface: Ge(111)c(2 × 8). Experiments show bimodal energy-loss distributions revealing two channels. Molecular dynamics trajectories within the Born-Oppenheimer approximation reproduce one channel quantitatively. The second channel transfers much more energy and is absent in simulations. It grows with hydrogen atom incidence energy and exhibits an energy-loss onset equal to the Ge surface bandgap. This leads us to conclude that hydrogen atom collisions at the surface of a semiconductor are capable of promoting electrons from the valence to the conduction band with high efficiency. Our current understanding fails to explain these observations.
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Registered trials
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