Format

Send to

Choose Destination
See comment in PubMed Commons below
Nano Lett. 2012 May 9;12(5):2337-41. doi: 10.1021/nl300262j. Epub 2012 Apr 17.

Time-resolved photoinduced thermoelectric and transport currents in GaAs nanowires.

Author information

1
Walter Schottky Institut and Physik-Department, Technische Universit√§t M√ľnchen, Am Coulombwall 4a, 85748 Garching, Germany.

Abstract

In order to clarify the temporal interplay of the different photocurrent mechanisms occurring in single GaAs nanowire based circuits, we introduce an on-chip photocurrent pump-probe spectroscopy with a picosecond time resolution. We identify photoinduced thermoelectric, displacement, and carrier lifetime limited currents as well as the transport of photogenerated holes to the electrodes. Moreover, we show that the time-resolved photocurrent spectroscopy can be used to investigate the drift velocity of photogenerated carriers in semiconducting nanowires. Hereby, our results are relevant for nanowire-based optoelectronic and photovoltaic applications.

PMID:
22494021
DOI:
10.1021/nl300262j
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for American Chemical Society
    Loading ...
    Support Center