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Constructing water-resistant CH3NH3PbI3 perovskite films : Via coordination interaction

Li, Bo LU ; Fei, Chengbin; Zheng, Kaibo LU ; Qu, Xuanhui; Pullerits, Tönu LU ; Cao, Guozhong and Tian, Jianjun (2016) In Journal of Materials Chemistry A 4(43). p.17018-17024
Abstract

Organic-inorganic halide CH3NH3PbI3 (MAPbI3) perovskite solar cells (PSCs) have attracted intensive attention due to their high power conversion efficiency and low fabrication cost. However, MAPbI3 is known to be very sensitive to humidity, and the intrinsic long-term stability of the MAPbI3 film remains a critical challenge. 2-Aminoethanethiol (2-AET) was used as a ligand to bridge the organic compound (MAI) and inorganic compound (PbI2), which restricted the fast growth of PbI2 to realize the synchronous growth environment of MAI and PbI2 crystals, resulting in the formation of a compact MAPbI3 film with polygonal grains. Due... (More)

Organic-inorganic halide CH3NH3PbI3 (MAPbI3) perovskite solar cells (PSCs) have attracted intensive attention due to their high power conversion efficiency and low fabrication cost. However, MAPbI3 is known to be very sensitive to humidity, and the intrinsic long-term stability of the MAPbI3 film remains a critical challenge. 2-Aminoethanethiol (2-AET) was used as a ligand to bridge the organic compound (MAI) and inorganic compound (PbI2), which restricted the fast growth of PbI2 to realize the synchronous growth environment of MAI and PbI2 crystals, resulting in the formation of a compact MAPbI3 film with polygonal grains. Due to the compact (PbI2)-2-AET-(MAI) molecule barrier layers in the MAPbI3 structure, the resulting perovskite films showed excellent intrinsic water-resistance, with the MAPbI3 perovskite crystal structure retained for a long time (>10 minutes) after immersion in water. This work makes a step towards obtaining long-term stable MAPbI3 perovskite devices.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Materials Chemistry A
volume
4
issue
43
pages
7 pages
publisher
Royal Society of Chemistry
external identifiers
  • scopus:84994246321
  • wos:000387878700032
ISSN
2050-7488
DOI
10.1039/c6ta06892h
language
English
LU publication?
yes
id
d4f7b23d-1f77-4ad8-9f72-c46387397499
date added to LUP
2017-02-21 14:13:47
date last changed
2017-11-12 04:29:43
@article{d4f7b23d-1f77-4ad8-9f72-c46387397499,
  abstract     = {<p>Organic-inorganic halide CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> (MAPbI<sub>3</sub>) perovskite solar cells (PSCs) have attracted intensive attention due to their high power conversion efficiency and low fabrication cost. However, MAPbI<sub>3</sub> is known to be very sensitive to humidity, and the intrinsic long-term stability of the MAPbI<sub>3</sub> film remains a critical challenge. 2-Aminoethanethiol (2-AET) was used as a ligand to bridge the organic compound (MAI) and inorganic compound (PbI<sub>2</sub>), which restricted the fast growth of PbI<sub>2</sub> to realize the synchronous growth environment of MAI and PbI<sub>2</sub> crystals, resulting in the formation of a compact MAPbI<sub>3</sub> film with polygonal grains. Due to the compact (PbI<sub>2</sub>)-2-AET-(MAI) molecule barrier layers in the MAPbI<sub>3</sub> structure, the resulting perovskite films showed excellent intrinsic water-resistance, with the MAPbI<sub>3</sub> perovskite crystal structure retained for a long time (&gt;10 minutes) after immersion in water. This work makes a step towards obtaining long-term stable MAPbI<sub>3</sub> perovskite devices.</p>},
  author       = {Li, Bo and Fei, Chengbin and Zheng, Kaibo and Qu, Xuanhui and Pullerits, Tönu and Cao, Guozhong and Tian, Jianjun},
  issn         = {2050-7488},
  language     = {eng},
  number       = {43},
  pages        = {17018--17024},
  publisher    = {Royal Society of Chemistry},
  series       = {Journal of Materials Chemistry A},
  title        = {Constructing water-resistant CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> perovskite films : Via coordination interaction},
  url          = {http://dx.doi.org/10.1039/c6ta06892h},
  volume       = {4},
  year         = {2016},
}