Surface photovoltage of Ag nanoparticles and Au chains on Si(111)

Sell, Kristian; Barke, Ingo; Polei, Stefan; Schümann, Christian; Oeynhausen, Viola von; Meiwes‐Broer, Karl‐Heinz

doi:10.1002/pssb.200945577

Cited by 24 publications

(21 citation statements)

References 36 publications

(43 reference statements)

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“…It is attributed to electron injection into surface bands by the donor adatoms, resulting in a rigid energy shift of the bands relative to the Fermi level within each AFS. Tip-induced band bending is excluded by varying the set point conditions and by the voltage independence of the shift (see also [40]). Interchain coupling is low since no significant correlation of the peak position between neighboring chains could be found.…”

Section: (A)] and Others Located Between The Adatoms Inside The Afs mentioning

confidence: 99%

Confined Doping on a Metallic Atomic Chain Structure

et al. 2012

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On Si(111)-(5×2)-Au it is shown that metallic sections of quantum wires between two doping adatoms establish a local electronic structure which is primarily defined by the section length. Such confined doping is a direct consequence of reduced dimensionality and is not observed in higher dimensions. Within a chain segment, the effect of a spatially independent charge-carrier concentration is superimposed by a Coulomb-like interaction due to the positively charged dopants. This offers a natural explanation for the relatively broad photoemission features and the complex appearance in scanning tunneling microscopy and spectroscopy images.

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Section: (A)] and Others Located Between The Adatoms Inside The Afs mentioning

confidence: 99%

Confined Doping on a Metallic Atomic Chain Structure

et al. 2012

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“…As an example, for Ag n (diameter of 6 nm) deposited on Si(111) (E at 0.02 eV), the 7x7 surface reconstruction has been preserved upon cluster deposition as demonstrated by atomically resolved STM images(Fig. 14)[166].…”

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confidence: 96%

“…A non-linear grey scale has been used to emphasize the atomically resolved surface reconstruction. Reprinted with permission from[166].…”

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confidence: 99%

Cluster–surface interaction: From soft landing to implantation

Popok

Barke

Campbell

et al. 2011

Surface Science Reports

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237

197

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The current paper presents a state-of-the-art review in the field of interaction of atomic and molecular clusters with solids. We do not attempt to overview the entire broad field, but rather concentrate on the impact phenomena: how the physics of the cluster-surface interaction depends on the kinetic energy and what effects are induced under different energetic regimes. The review starts with an introduction to the field and a short history of cluster beam development. Then fundamental physical aspects of cluster formation and the most common methods for the production of cluster beams are overviewed. For cluster-surface interactions, one of the important scenarios is the low-energy regime where the kinetic energy per atom of the accelerated cluster stays well below the binding (cohesive) energy of the cluster constituents. This case is often called This is the peer-reviewed author's version of a work that was accepted for publication in Surface Science Reports. Changes resulting from the publishing process, such as editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version

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“…Figure a schematically presents the surface energy band bending to understand the charge separation under weak illumination and random distribution under strong illumination. For the SrTiO 3 nanocube, and n-type semiconductor, the surface band tends to bend upward in space charge region and has different bend extents at different surface positions. − Here, the potential difference in conduction band or valence band between the edge and the center of the facet is denoted by Δϕ, which can be taken as the driving force for spatial charge separation between the edge and the central part of the facet. When illumination is applied, the band bending decreases under illumination and the corresponding Δϕ becomes less than Δϕ 0 .…”

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Unusual Charge Distribution on the Facet of a SrTiO₃ Nanocube under Light Irradiation

Zeng

Tao

et al. 2019

J. Phys. Chem. Lett.

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Spatial charge separation has already been realized between different facets of a single crystal. However, how the photogenerated charges distribute on one facet of a single crystal is still unknown. In this work, we found that the distribution of photogenerated charges on a SrTiO 3 nanocube varies with the light intensity. Photogenerated holes tend to transfer to the edges and corners of the crystal under weak illumination, indicating that a spatial charge separation takes place on the same facet of the SrTiO 3 nanocube. Based on this effect, oxidation and reduction cocatalysts can be respectively photodeposited on the edges and central areas of one facet. The separated dual-cocatalysts lead to a remarkable enhancement in photocatalytic overall water splitting. These findings reveal that the spatial charge separation can happen even on the same facet.

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Surface photovoltage of Ag nanoparticles and Au chains on Si(111)

Cited by 24 publications

References 36 publications

Confined Doping on a Metallic Atomic Chain Structure

Confined Doping on a Metallic Atomic Chain Structure

Cluster–surface interaction: From soft landing to implantation

Unusual Charge Distribution on the Facet of a SrTiO₃ Nanocube under Light Irradiation

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Surface photovoltage of Ag nanoparticles and Au chains on Si(111)

Cited by 24 publications

References 36 publications

Confined Doping on a Metallic Atomic Chain Structure

Confined Doping on a Metallic Atomic Chain Structure

Cluster–surface interaction: From soft landing to implantation

Unusual Charge Distribution on the Facet of a SrTiO3 Nanocube under Light Irradiation

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Product

Resources

About

Unusual Charge Distribution on the Facet of a SrTiO₃ Nanocube under Light Irradiation