Cited by 30Nanowire Synthesis and ApplicationsTerahertz technology and applicationsSemiconductor Quantum Structures and Devices

Ultrafast photocurrents and THz generation in single InAs‐nanowires

Erhard, Nadine, Seifert, Paul, Prechtel, Leonhard, Hertenberger, Simon, Karl, Helmut, Abstreiter, Gerhard, Koblmüller, Gregor, Holleitner, Alexander W.·2013·Annalen der Physik

Abstract

To clarify the ultrafast temporal interplay of the different photocurrent mechanisms occurring in single InAs‐nanowire‐based circuits, an on‐chip photocurrent pump‐probe spectroscopy based on coplanar striplines was utilized. The data are interpreted in terms of a photo‐thermoelectric current and the transport of photogenerated holes to the electrodes as the dominating ultrafast photocurrent contributions. Moreover, it is shown that THz radiation is generated in the optically excited InAs‐nanowires, which is interpreted in terms of a dominating photo‐Dember effect. The results are relevant for nanowire‐based optoelectronic and photovoltaic applications as well as for the design of nanowire‐based THz sources.

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Crossref · 10.1002/andp.201200181

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44 of 44 references verified0 citation errors · 0 not checkable

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  • Diffusion currents are driven by localized excitations and uneven carrier mobilities in photo-Dember or photo-thermoelectric effects.

    “Diffusion currents, on the other hand, are driven by localized excitations and uneven carrier mobilities in photo-Dember30 or photo-thermoelectric31 effects.”
  • The photo-Dember effect arising from unequal electron-hole diffusion rates is a common source of charge currents in nanowires, often in addition to or in competition with junction fields, depending on doping type.

    “The photo-Dember effect arising from unequal electron-hole diffusion rates is a common source of charge currents in nanowires31,222–224, often in addition to or in competition with junction fields221,222, depending on doping type.”

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Authors
Erhard, N., Seifert, P., Prechtel, L., Hertenberger, S., Karl, H., Abstreiter, G., Koblmüller, G., & Holleitner, A. W.
Affiliations
  • Technical University of Munich (DE)
  • University of Augsburg (DE)
Corresponding author
  • Erhard, Nadine
  • Holleitner, Alexander W.
Venue
Annalen der Physik
Publisher
Wiley
Published
2012-12-17
Volume
525
Issue
1-2
Pages
180-188
ISSN
  • 0003-3804 (ISSN-L)
  • 1521-3889
OpenAlex
W1905344023
Cited by
30
References
44
Citations by year
2023: 5 · 2021: 4 · 2020: 3 · 2017: 5 · 2016: 1 · 2015: 6 · 2014: 4 · 2013: 2
FWCI
2.19
Type
journal article
Language
en
Open access
closed
Locations
  • Annalen der Physik (publishedVersion)
  • OPUS (Augsburg University) (submittedVersion)
Funders
National Institute for Materials Science
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Nanowire Synthesis and Applications
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Terahertz technology and applications
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Semiconductor Quantum Structures and Devices
Keywords
InAs nanowires, ultrafast photocurrents, terahertz generation, photo-Dember effect, pump-probe spectroscopy, coplanar stripline, optoelectronic devices, photovoltaic devices

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