Ultrafast photocurrents and THz generation in single InAs-nanowires

Nadine Erhard; Paul Seifert; Leonhard Prechtel; Simon Hertenberger; Helmut Karl; Gerhard Abstreiter; Gregor Koblmüller; Alexander W. Holleitner

doi:10.1002/andp.201200181

Ultrafast photocurrents and THz generation in single InAs-nanowires

Nadine Erhard, Paul Seifert, Leonhard Prechtel, Simon Hertenberger, Helmut Karl, Gerhard Abstreiter, Gregor Koblmüller, Alexander W. Holleitner

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

26 Scopus citations

Abstract

To clarify the ultrafast temporal interplay of the different photocurrent mechanisms occurring in single InAsnanowire- based circuits, an on-chip photocurrent pumpprobe spectroscopy based on coplanar striplines was utilized. The data are interpreted in terms of a photothermoelectric 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 InAsnanowires, which is interpreted in terms of a dominating photo-Dember effect. The results are relevant for nanowirebased optoelectronic and photovoltaic applications as well as for the design of nanowire-based THz sources.

Original language	English
Pages (from-to)	180-188
Number of pages	9
Journal	Annalen der Physik
Volume	525
Issue number	1-2
DOIs	https://doi.org/10.1002/andp.201200181
State	Published - Feb 2013

Keywords

InAs nanowire
THz source
Time-resolved optoelectronic nanoscale transport

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1002/andp.201200181

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title = "Ultrafast photocurrents and THz generation in single InAs-nanowires",

abstract = "To clarify the ultrafast temporal interplay of the different photocurrent mechanisms occurring in single InAsnanowire- based circuits, an on-chip photocurrent pumpprobe spectroscopy based on coplanar striplines was utilized. The data are interpreted in terms of a photothermoelectric 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 InAsnanowires, which is interpreted in terms of a dominating photo-Dember effect. The results are relevant for nanowirebased optoelectronic and photovoltaic applications as well as for the design of nanowire-based THz sources.",

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AU - Erhard, Nadine

AU - Seifert, Paul

AU - Prechtel, Leonhard

AU - Hertenberger, Simon

AU - Karl, Helmut

AU - Abstreiter, Gerhard

AU - Koblmüller, Gregor

AU - Holleitner, Alexander W.

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Y1 - 2013/2

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AB - To clarify the ultrafast temporal interplay of the different photocurrent mechanisms occurring in single InAsnanowire- based circuits, an on-chip photocurrent pumpprobe spectroscopy based on coplanar striplines was utilized. The data are interpreted in terms of a photothermoelectric 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 InAsnanowires, which is interpreted in terms of a dominating photo-Dember effect. The results are relevant for nanowirebased optoelectronic and photovoltaic applications as well as for the design of nanowire-based THz sources.

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Ultrafast photocurrents and THz generation in single InAs-nanowires

Abstract

Keywords

UN SDGs

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