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Vertically Aligned CsPbBr3 Nanowire Arrays with Template-Induced Crystal Phase Transition and Stability

Zhang, Zhaojun LU ; Suchan, Klara LU ; Li, Jun LU orcid ; Hetherington, Crispin LU orcid ; Kiligaridis, Alexander LU ; Unger, Eva LU ; Scheblykin, Ivan G. LU orcid and Wallentin, Jesper LU (2021) In Journal of Physical Chemistry C 125(8). p.4860-4868
Abstract

Metal halide perovskites show great promise for a wide range of optoelectronic applications but are plagued by instability when exposed to air and light. This work presents low-temperature solution growth of vertically aligned CsPbBr3 nanowire arrays in AAO (anodized aluminum oxide) templates with excellent stability, with samples exposed to air for 4 months still exhibiting comparable photoluminescence and UV stability to fresh samples. The single-crystal nanowire length is adjusted from ∼100 nm to 5 μm by adjusting the precursor solution amount and concentration, and we observe length-to-diameter ratios as high as 100. Structural characterization results indicate that large-diameter CsPbBr3 nanowires have... (More)

Metal halide perovskites show great promise for a wide range of optoelectronic applications but are plagued by instability when exposed to air and light. This work presents low-temperature solution growth of vertically aligned CsPbBr3 nanowire arrays in AAO (anodized aluminum oxide) templates with excellent stability, with samples exposed to air for 4 months still exhibiting comparable photoluminescence and UV stability to fresh samples. The single-crystal nanowire length is adjusted from ∼100 nm to 5 μm by adjusting the precursor solution amount and concentration, and we observe length-to-diameter ratios as high as 100. Structural characterization results indicate that large-diameter CsPbBr3 nanowires have an orthorhombic structure, while the 10 nm- and 20 nm-diameter nanowires adopt a cubic structure. Photoluminescence shows a gradual blue-shift in emission with decreasing nanowire diameter and marginal changes under varying illumination power intensity. The CsPbBr3-nanowires/AAO composite exhibits excellent resistance to X-ray radiation and long-term air storage, which makes it promising for future optoelectronic applications such as X-ray scintillators. These results show how physical confinement in AAO can be used to realize CsPbBr3 nanowire arrays and control their morphology and crystal structure.

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author
; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Physical Chemistry C
volume
125
issue
8
pages
9 pages
publisher
The American Chemical Society (ACS)
external identifiers
  • scopus:85101519268
  • pmid:33763163
ISSN
1932-7447
DOI
10.1021/acs.jpcc.0c11217
language
English
LU publication?
yes
id
f7968ded-3725-4e39-a6e4-6c684f4b436d
date added to LUP
2021-03-18 08:15:00
date last changed
2024-09-05 17:09:56
@article{f7968ded-3725-4e39-a6e4-6c684f4b436d,
  abstract     = {{<p>Metal halide perovskites show great promise for a wide range of optoelectronic applications but are plagued by instability when exposed to air and light. This work presents low-temperature solution growth of vertically aligned CsPbBr<sub>3</sub> nanowire arrays in AAO (anodized aluminum oxide) templates with excellent stability, with samples exposed to air for 4 months still exhibiting comparable photoluminescence and UV stability to fresh samples. The single-crystal nanowire length is adjusted from ∼100 nm to 5 <i>μ</i>m by adjusting the precursor solution amount and concentration, and we observe length-to-diameter ratios as high as 100. Structural characterization results indicate that large-diameter CsPbBr<sub>3</sub> nanowires have an orthorhombic structure, while the 10 nm- and 20 nm-diameter nanowires adopt a cubic structure. Photoluminescence shows a gradual blue-shift in emission with decreasing nanowire diameter and marginal changes under varying illumination power intensity. The CsPbBr<sub>3</sub>-nanowires/AAO composite exhibits excellent resistance to X-ray radiation and long-term air storage, which makes it promising for future optoelectronic applications such as X-ray scintillators. These results show how physical confinement in AAO can be used to realize CsPbBr<sub>3</sub> nanowire arrays and control their morphology and crystal structure. </p>}},
  author       = {{Zhang, Zhaojun and Suchan, Klara and Li, Jun and Hetherington, Crispin and Kiligaridis, Alexander and Unger, Eva and Scheblykin, Ivan G. and Wallentin, Jesper}},
  issn         = {{1932-7447}},
  language     = {{eng}},
  month        = {{02}},
  number       = {{8}},
  pages        = {{4860--4868}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{Journal of Physical Chemistry C}},
  title        = {{Vertically Aligned CsPbBr<sub>3</sub> Nanowire Arrays with Template-Induced Crystal Phase Transition and Stability}},
  url          = {{http://dx.doi.org/10.1021/acs.jpcc.0c11217}},
  doi          = {{10.1021/acs.jpcc.0c11217}},
  volume       = {{125}},
  year         = {{2021}},
}