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A cathodoluminescence study of InP/InGaP axially heterostructured NWs for tandem solar cells

Mediavilla, I. ; Anaya, J. ; Galiana, B. ; Hrachowina, L. LU ; Borgström, M. T. LU and Jimenez, J. (2024) In Nanotechnology 35(19).
Abstract

Axially heterostructured nanowires (NWs) constitute a promising platform for advanced electronic and optoelectronic nanodevices. The presence of different materials in these NWs introduces a mismatch resulting in complex strain distributions susceptible of changing the band gap and carrier mobility. The growth of these NWs presents challenges related to the reservoir effect in the catalysts droplet that affect to the junction abruptness, and the occurrence of undesired lateral growth creating core–shell heterostructures that introduce additional strain. We present herein a cathodoluminescence (CL) analysis on axially heterostructured InP/InGaP NWs with tandem solar cell structure. The CL is complemented with micro Raman, micro... (More)

Axially heterostructured nanowires (NWs) constitute a promising platform for advanced electronic and optoelectronic nanodevices. The presence of different materials in these NWs introduces a mismatch resulting in complex strain distributions susceptible of changing the band gap and carrier mobility. The growth of these NWs presents challenges related to the reservoir effect in the catalysts droplet that affect to the junction abruptness, and the occurrence of undesired lateral growth creating core–shell heterostructures that introduce additional strain. We present herein a cathodoluminescence (CL) analysis on axially heterostructured InP/InGaP NWs with tandem solar cell structure. The CL is complemented with micro Raman, micro photoluminescence (PL), and high resolution transmission electron microscopy measurements. The results reveal the zinc blende structure of the NWs, the presence of a thin InGaP shell around the InP bottom cell, along with its associated strain, and the doping distribution.

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author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
cathodoluminescence, heterostructured nanowires, InGaP, InP, tandem solar cells
in
Nanotechnology
volume
35
issue
19
article number
195703
publisher
IOP Publishing
external identifiers
  • pmid:38316051
  • scopus:85185614380
ISSN
0957-4484
DOI
10.1088/1361-6528/ad263d
language
English
LU publication?
yes
id
fce0dac1-4937-4acf-b15a-94c999f4d088
date added to LUP
2024-03-13 14:30:25
date last changed
2024-04-24 10:16:14
@article{fce0dac1-4937-4acf-b15a-94c999f4d088,
  abstract     = {{<p>Axially heterostructured nanowires (NWs) constitute a promising platform for advanced electronic and optoelectronic nanodevices. The presence of different materials in these NWs introduces a mismatch resulting in complex strain distributions susceptible of changing the band gap and carrier mobility. The growth of these NWs presents challenges related to the reservoir effect in the catalysts droplet that affect to the junction abruptness, and the occurrence of undesired lateral growth creating core–shell heterostructures that introduce additional strain. We present herein a cathodoluminescence (CL) analysis on axially heterostructured InP/InGaP NWs with tandem solar cell structure. The CL is complemented with micro Raman, micro photoluminescence (PL), and high resolution transmission electron microscopy measurements. The results reveal the zinc blende structure of the NWs, the presence of a thin InGaP shell around the InP bottom cell, along with its associated strain, and the doping distribution.</p>}},
  author       = {{Mediavilla, I. and Anaya, J. and Galiana, B. and Hrachowina, L. and Borgström, M. T. and Jimenez, J.}},
  issn         = {{0957-4484}},
  keywords     = {{cathodoluminescence; heterostructured nanowires; InGaP; InP; tandem solar cells}},
  language     = {{eng}},
  number       = {{19}},
  publisher    = {{IOP Publishing}},
  series       = {{Nanotechnology}},
  title        = {{A cathodoluminescence study of InP/InGaP axially heterostructured NWs for tandem solar cells}},
  url          = {{http://dx.doi.org/10.1088/1361-6528/ad263d}},
  doi          = {{10.1088/1361-6528/ad263d}},
  volume       = {{35}},
  year         = {{2024}},
}