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Ten-fold enhancement of InAs nanowire photoluminescence emission with an InP passivation layer

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Jurczak, Pamela, Zhang, Yunyan, Wu, Jiang, Sánchez, Ana M., Aagesen, Martin and Liu, Huiyun (2017) Ten-fold enhancement of InAs nanowire photoluminescence emission with an InP passivation layer. Nano Letters, 17 (6). pp. 3629-3633. doi:10.1021/acs.nanolett.7b00803

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Official URL: https://doi.org/10.1021/acs.nanolett.7b00803

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Abstract

In this letter, we demonstrate that a significant improvement of optical performance of InAs nanowires can be achieved by capping the core InAs nanowires with a thin InP shell, which successfully passivates the surface states reducing the rate of non-radiative recombination. The improvements have been confirmed by detailed photoluminescence measurements, which showed up to ten-fold increase in the intensity of room-temperature photoluminescence from the capped InAs/InP nanowires compared to the sample with core-only InAs nanowires. Moreover, the nanowires exhibit high stability of total photoluminescence emission strength across temperature range from 10 to 300 K as a result of strong quantum confinement. These findings could be the key to successful implementation of InAs nanowires into optoelectronic devices.

Item Type: Journal Article
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Science > Physics
Library of Congress Subject Headings (LCSH): Nanowires, Photoluminescence, Optoelectronics
Journal or Publication Title: Nano Letters
Publisher: American Chemical Society
ISSN: 1530-6984
Official Date: 23 May 2017
Dates:
DateEvent
23 May 2017Available
23 May 2017Accepted
2 May 2017Modified
Date of first compliant deposit: 18 January 2018
Volume: 17
Number: 6
Page Range: pp. 3629-3633
DOI: 10.1021/acs.nanolett.7b00803
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
EP/P00886/1[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266
EP/P000916/1[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266
UNSPECIFIEDLeverhulme Trusthttp://dx.doi.org/10.13039/501100000275
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