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Highly Stable Perovskite Supercrystals via Oil-in-Oil Templating

Tang, Yingying ; Gomez, Leyre ; Lesage, Arnon ; Marino, Emanuele ; Kodger, Thomas E. ; Meijer, Janne Mieke LU ; Kolpakov, Paul ; Meng, Jie ; Zheng, Kaibo LU and Gregorkiewicz, Tom , et al. (2020) In Nano Letters 20(8). p.5997-6004
Abstract

Inorganic perovskites display an enticing foreground for their wide range of optoelectronic applications. Recently, supercrystals (SCs) of inorganic perovskite nanocrystals (NCs) have been reported to possess highly ordered structure as well as novel collective optical properties, opening new opportunities for efficient films. Here, we report the large-scale assembly control of spherical, cubic, and hexagonal SCs of inorganic perovskite NCs through templating by oil-in-oil emulsions. We show that an interplay between the roundness of the cubic NCs and the tension of the confining droplet surface sets the superstructure morphology, and we exploit this interplay to design dense hyperlattices of SCs. The SC films show strongly enhanced... (More)

Inorganic perovskites display an enticing foreground for their wide range of optoelectronic applications. Recently, supercrystals (SCs) of inorganic perovskite nanocrystals (NCs) have been reported to possess highly ordered structure as well as novel collective optical properties, opening new opportunities for efficient films. Here, we report the large-scale assembly control of spherical, cubic, and hexagonal SCs of inorganic perovskite NCs through templating by oil-in-oil emulsions. We show that an interplay between the roundness of the cubic NCs and the tension of the confining droplet surface sets the superstructure morphology, and we exploit this interplay to design dense hyperlattices of SCs. The SC films show strongly enhanced stability for at least two months without obvious structural degradation and minor optical changes. Our results on the controlled large-scale assembly of perovskite NC superstructures provide new prospects for the bottom-up production of optoelectronic devices based on the microfluidic production of mesoscopic building blocks.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
assembly, emulsion-droplet templating, perovskite films, stability, supercrystals
in
Nano Letters
volume
20
issue
8
pages
8 pages
publisher
The American Chemical Society (ACS)
external identifiers
  • pmid:32701303
  • scopus:85089613686
ISSN
1530-6992
DOI
10.1021/acs.nanolett.0c02005
language
English
LU publication?
yes
id
69a0178e-34b9-48ba-b3b8-05741b98d7cd
date added to LUP
2020-08-27 12:48:26
date last changed
2024-03-20 14:59:29
@article{69a0178e-34b9-48ba-b3b8-05741b98d7cd,
  abstract     = {{<p>Inorganic perovskites display an enticing foreground for their wide range of optoelectronic applications. Recently, supercrystals (SCs) of inorganic perovskite nanocrystals (NCs) have been reported to possess highly ordered structure as well as novel collective optical properties, opening new opportunities for efficient films. Here, we report the large-scale assembly control of spherical, cubic, and hexagonal SCs of inorganic perovskite NCs through templating by oil-in-oil emulsions. We show that an interplay between the roundness of the cubic NCs and the tension of the confining droplet surface sets the superstructure morphology, and we exploit this interplay to design dense hyperlattices of SCs. The SC films show strongly enhanced stability for at least two months without obvious structural degradation and minor optical changes. Our results on the controlled large-scale assembly of perovskite NC superstructures provide new prospects for the bottom-up production of optoelectronic devices based on the microfluidic production of mesoscopic building blocks.</p>}},
  author       = {{Tang, Yingying and Gomez, Leyre and Lesage, Arnon and Marino, Emanuele and Kodger, Thomas E. and Meijer, Janne Mieke and Kolpakov, Paul and Meng, Jie and Zheng, Kaibo and Gregorkiewicz, Tom and Schall, Peter}},
  issn         = {{1530-6992}},
  keywords     = {{assembly; emulsion-droplet templating; perovskite films; stability; supercrystals}},
  language     = {{eng}},
  number       = {{8}},
  pages        = {{5997--6004}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{Nano Letters}},
  title        = {{Highly Stable Perovskite Supercrystals via Oil-in-Oil Templating}},
  url          = {{http://dx.doi.org/10.1021/acs.nanolett.0c02005}},
  doi          = {{10.1021/acs.nanolett.0c02005}},
  volume       = {{20}},
  year         = {{2020}},
}