Advanced

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

Zhang, Zhaojun LU ; Suchan, Klara LU ; Li, Jun LU ; Hetherington, Crispin LU ; Kiligaridis, Alexander LU ; Unger, Eva LU ; Scheblykin, Ivan G. LU 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.

(Less)
Please use this url to cite or link to this publication:
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
2021-06-18 03:00:05
@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},
}