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Nanowire photodetectors with embedded quantum heterostructures for infrared detection

Karimi, Mohammad LU ; Heurlin, Magnus LU ; Limpert, Steven LU ; Jain, Vishal LU ; Mansouri, Ebrahim; Zeng, Xulu LU ; Samuelson, Lars LU ; Linke, Heiner LU ; Borgström, Magnus LU and Pettersson, Håkan LU (2019) In Infrared Physics and Technology 96. p.209-212
Abstract
Nanowires offer remarkable opportunities for realizing new optoelectronic devices because of their unique fundamental properties. The ability to engineer nanowire heterostructures with large bandgap variations is particularly interesting for technologically important broadband photodetector applications. Here we report on infrared photodetectors based on arrays of InP nanowires with embedded InAsP quantum discs. We demonstrate a strongly reduced dark current in the detector elements by compensating the unintentional n-doping in the nominal intrinsic region of the InP nanowires by in-situ doping with Zn, a crucial step towards realizing high-performance devices. The optimized array detectors show a broad spectral sensitivity at normal... (More)
Nanowires offer remarkable opportunities for realizing new optoelectronic devices because of their unique fundamental properties. The ability to engineer nanowire heterostructures with large bandgap variations is particularly interesting for technologically important broadband photodetector applications. Here we report on infrared photodetectors based on arrays of InP nanowires with embedded InAsP quantum discs. We demonstrate a strongly reduced dark current in the detector elements by compensating the unintentional n-doping in the nominal intrinsic region of the InP nanowires by in-situ doping with Zn, a crucial step towards realizing high-performance devices. The optimized array detectors show a broad spectral sensitivity at normal incidence for wavelengths from visible to far-infrared up to 20 μm, promoted by both interband and intersubband transitions. Optical simulations show that the unexpected normal incidence response at long wavelengths is due to non-zero longitudinal modes hosted by the nanowires. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Infrared Physics and Technology
volume
96
pages
209 - 212
publisher
ScienceDirect, Elsevier
external identifiers
  • scopus:85057545191
ISSN
1350-4495
DOI
10.1016/j.infrared.2018.11.009
language
English
LU publication?
yes
id
6a210a6b-76c9-45de-a20b-8577e2543e24
date added to LUP
2018-12-10 12:52:36
date last changed
2019-01-06 14:19:30
@article{6a210a6b-76c9-45de-a20b-8577e2543e24,
  abstract     = {Nanowires offer remarkable opportunities for realizing new optoelectronic devices because of their unique fundamental properties. The ability to engineer nanowire heterostructures with large bandgap variations is particularly interesting for technologically important broadband photodetector applications. Here we report on infrared photodetectors based on arrays of InP nanowires with embedded InAsP quantum discs. We demonstrate a strongly reduced dark current in the detector elements by compensating the unintentional n-doping in the nominal intrinsic region of the InP nanowires by in-situ doping with Zn, a crucial step towards realizing high-performance devices. The optimized array detectors show a broad spectral sensitivity at normal incidence for wavelengths from visible to far-infrared up to 20 μm, promoted by both interband and intersubband transitions. Optical simulations show that the unexpected normal incidence response at long wavelengths is due to non-zero longitudinal modes hosted by the nanowires.},
  author       = {Karimi, Mohammad and Heurlin, Magnus and Limpert, Steven and Jain, Vishal and Mansouri, Ebrahim and Zeng, Xulu and Samuelson, Lars and Linke, Heiner and Borgström, Magnus and Pettersson, Håkan},
  issn         = {1350-4495},
  language     = {eng},
  pages        = {209--212},
  publisher    = {ScienceDirect, Elsevier},
  series       = {Infrared Physics and Technology},
  title        = {Nanowire photodetectors with embedded quantum heterostructures for infrared detection},
  url          = {http://dx.doi.org/10.1016/j.infrared.2018.11.009},
  volume       = {96},
  year         = {2019},
}