Diameter-Dependent Photocurrent in InAsSb Nanowire Infrared Photodetectors.
Svensson, Johannes LU ; Anttu, Nicklas LU ; Vainorius, Neimantas LU ; Borg, Mattias LU
and Wernersson, Lars-Erik
LU
(2013)
In Nano Letters
13(4).
p.1380-1385
- Abstract
- Photoconductors using vertical arrays of InAs/InAs1-xSbx nanowires with varying Sb composition x have been fabricated and characterized. The spectrally resolved photocurrents are strongly diameter dependent with peaks, which are red-shifted with diameter, appearing for thicker wires. Results from numerical simulations are in good agreement with the experimental data and reveal that the peaks are due to resonant modes that enhance the coupling of light into the wires. Through proper selection of wire diameter, the absorptance can be increased by more than 1 order of magnitude at a specific wavelength compared to a thin planar film with the same amount of material. A maximum 20% cutoff wavelength of 5.7 μm is obtained at 5 K for a wire... (More)
- Photoconductors using vertical arrays of InAs/InAs1-xSbx nanowires with varying Sb composition x have been fabricated and characterized. The spectrally resolved photocurrents are strongly diameter dependent with peaks, which are red-shifted with diameter, appearing for thicker wires. Results from numerical simulations are in good agreement with the experimental data and reveal that the peaks are due to resonant modes that enhance the coupling of light into the wires. Through proper selection of wire diameter, the absorptance can be increased by more than 1 order of magnitude at a specific wavelength compared to a thin planar film with the same amount of material. A maximum 20% cutoff wavelength of 5.7 μm is obtained at 5 K for a wire diameter of 717 nm at a Sb content of x = 0.62, but simulations predict that detection at longer wavelengths can be achieved by increasing the diameter. Furthermore, photodetection in InAsSb nanowire arrays integrated on Si substrates is also demonstrated. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3628551
- author
- Svensson, Johannes
LU
; Anttu, Nicklas
LU
; Vainorius, Neimantas
LU
; Borg, Mattias
LU
and Wernersson, Lars-Erik
LU
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Nano Letters
- volume
- 13
- issue
- 4
- pages
- 1380 - 1385
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- pmid:23464650
- wos:000317549300003
- scopus:84876032143
- pmid:23464650
- ISSN
- 1530-6992
- DOI
- 10.1021/nl303751d
- language
- English
- LU publication?
- yes
- id
- f979637c-9f78-483e-8629-3f0dea439680 (old id 3628551)
- date added to LUP
- 2016-04-01 09:52:57
- date last changed
- 2023-11-09 06:32:21
@article{f979637c-9f78-483e-8629-3f0dea439680,
abstract = {{Photoconductors using vertical arrays of InAs/InAs1-xSbx nanowires with varying Sb composition x have been fabricated and characterized. The spectrally resolved photocurrents are strongly diameter dependent with peaks, which are red-shifted with diameter, appearing for thicker wires. Results from numerical simulations are in good agreement with the experimental data and reveal that the peaks are due to resonant modes that enhance the coupling of light into the wires. Through proper selection of wire diameter, the absorptance can be increased by more than 1 order of magnitude at a specific wavelength compared to a thin planar film with the same amount of material. A maximum 20% cutoff wavelength of 5.7 μm is obtained at 5 K for a wire diameter of 717 nm at a Sb content of x = 0.62, but simulations predict that detection at longer wavelengths can be achieved by increasing the diameter. Furthermore, photodetection in InAsSb nanowire arrays integrated on Si substrates is also demonstrated.}},
author = {{Svensson, Johannes and Anttu, Nicklas and Vainorius, Neimantas and Borg, Mattias and Wernersson, Lars-Erik}},
issn = {{1530-6992}},
language = {{eng}},
number = {{4}},
pages = {{1380--1385}},
publisher = {{The American Chemical Society (ACS)}},
series = {{Nano Letters}},
title = {{Diameter-Dependent Photocurrent in InAsSb Nanowire Infrared Photodetectors.}},
url = {{https://lup.lub.lu.se/search/files/25064696/Diameter_Dependent_Photocurrent_in_Infrared_InAsSb_Nanowire_Photodetectors_ver_13_changes_accepted_.pdf}},
doi = {{10.1021/nl303751d}},
volume = {{13}},
year = {{2013}},
}