Charge carrier dynamics in semiconducting mercury cluster anions

Ryan M. Young; Graham B. Griffin; Oli T. Ehrler; Aster Kammrath; Arthur E. Bragg; Jan R R Verlet; Ori Cheshnovsky; Daniel M. Neumark

doi:10.1088/0031-8949/80/04/048102

Charge carrier dynamics in semiconducting mercury cluster anions

Ryan M. Young, Graham B. Griffin, Oli T. Ehrler, Aster Kammrath, Arthur E. Bragg, Jan R R Verlet, Ori Cheshnovsky, Daniel M. Neumark

Paula M. Trienens Institute for Sustainability and Energy

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

We have examined size-dependent electronic relaxation dynamics in isolated semiconducting mercury cluster anions using time-resolved photoelectron imaging. Relaxation following excitation from within the conduction (p-) band occurs on an ∼3-40 ps timescale and is attributed to non-adiabatic relaxation through the p-band. Exciting an electron from the valence (s-) band into the conduction band creates an electron-hole pair that relaxes prior to Auger emission. The dynamics associated with this feature occur on an ∼500 fs timescale and are attributed to either a hole-induced contraction of the cluster or electron-electron scattering.

Original language	English (US)
Article number	048102
Journal	Physica Scripta
Volume	80
Issue number	4
DOIs	https://doi.org/10.1088/0031-8949/80/04/048102
State	Published - 2009

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Mathematical Physics
Condensed Matter Physics

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title = "Charge carrier dynamics in semiconducting mercury cluster anions",

abstract = "We have examined size-dependent electronic relaxation dynamics in isolated semiconducting mercury cluster anions using time-resolved photoelectron imaging. Relaxation following excitation from within the conduction (p-) band occurs on an ∼3-40 ps timescale and is attributed to non-adiabatic relaxation through the p-band. Exciting an electron from the valence (s-) band into the conduction band creates an electron-hole pair that relaxes prior to Auger emission. The dynamics associated with this feature occur on an ∼500 fs timescale and are attributed to either a hole-induced contraction of the cluster or electron-electron scattering.",

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AU - Young, Ryan M.

AU - Griffin, Graham B.

AU - Ehrler, Oli T.

AU - Kammrath, Aster

AU - Bragg, Arthur E.

AU - Verlet, Jan R R

AU - Cheshnovsky, Ori

AU - Neumark, Daniel M.

PY - 2009

Y1 - 2009

N2 - We have examined size-dependent electronic relaxation dynamics in isolated semiconducting mercury cluster anions using time-resolved photoelectron imaging. Relaxation following excitation from within the conduction (p-) band occurs on an ∼3-40 ps timescale and is attributed to non-adiabatic relaxation through the p-band. Exciting an electron from the valence (s-) band into the conduction band creates an electron-hole pair that relaxes prior to Auger emission. The dynamics associated with this feature occur on an ∼500 fs timescale and are attributed to either a hole-induced contraction of the cluster or electron-electron scattering.

AB - We have examined size-dependent electronic relaxation dynamics in isolated semiconducting mercury cluster anions using time-resolved photoelectron imaging. Relaxation following excitation from within the conduction (p-) band occurs on an ∼3-40 ps timescale and is attributed to non-adiabatic relaxation through the p-band. Exciting an electron from the valence (s-) band into the conduction band creates an electron-hole pair that relaxes prior to Auger emission. The dynamics associated with this feature occur on an ∼500 fs timescale and are attributed to either a hole-induced contraction of the cluster or electron-electron scattering.

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Charge carrier dynamics in semiconducting mercury cluster anions

Abstract

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