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Inorganic Ions Assisted Anisotropic Growth of CsPbCl3 Nanowires with Surface Passivation Effect

Tang, Y ; Cao, X. ; Honarfar, Alireza ; Abdellah, Mohamed LU ; Chen, C ; Avila, J. ; Asensio, L ; Hammarström, Leif ; J, Sa and Canton, Sophie E , et al. (2018) In ACS Applied Materials and Interfaces 10(35). p.29574-29582
Abstract
All-inorganic halide perovskite nanowires (NWs) exhibit improved thermal and hydrolysis stability and could thus play a vital role in nanoscale optoelectronics. Among them, blue-light-based devices are extremely limited because of the lack of a facile method to obtain high-purity CsPbCl3 NWs. Herein, we report a direct and facile method for the synthesis of CsPbCl3 NWs assisted by inorganic ions that served both as a morphology controlling agent for the anisotropic growth of nanomaterials and a surface passivation species modulating the surface of nanomaterials. This new approach allows us to obtain high-purity and size-uniform NWs as long as 500 nm in length and 20 nm in diameter with high reproducibility. X-ray photoelectron spectroscopy... (More)
All-inorganic halide perovskite nanowires (NWs) exhibit improved thermal and hydrolysis stability and could thus play a vital role in nanoscale optoelectronics. Among them, blue-light-based devices are extremely limited because of the lack of a facile method to obtain high-purity CsPbCl3 NWs. Herein, we report a direct and facile method for the synthesis of CsPbCl3 NWs assisted by inorganic ions that served both as a morphology controlling agent for the anisotropic growth of nanomaterials and a surface passivation species modulating the surface of nanomaterials. This new approach allows us to obtain high-purity and size-uniform NWs as long as 500 nm in length and 20 nm in diameter with high reproducibility. X-ray photoelectron spectroscopy and ultrafast spectroscopic measurements confirmed that a reduced band gap caused by the surface species of NWs relative to nanocubes (NCs) was achieved at the photon energy of 160 eV because of the hybrid surface passivation contributed by adsorbed inorganic ions. The resulting NWs demonstrate significantly enhanced photoelectrochemical performances, 3.5-fold increase in the photocurrent generation, and notably improved stability compared to their NC counterparts. Our results suggest that the newly designed NWs could be a promising material for the development of nanoscale optoelectronic devices. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
ACS Applied Materials and Interfaces
volume
10
issue
35
pages
29574 - 29582
publisher
The American Chemical Society (ACS)
external identifiers
  • scopus:85052281624
ISSN
1944-8244
DOI
10.1021/acsami.8b09113
language
English
LU publication?
yes
id
7313a1a0-3877-458b-be17-e7e86b461284
date added to LUP
2019-04-27 14:04:10
date last changed
2023-09-22 23:04:46
@article{7313a1a0-3877-458b-be17-e7e86b461284,
  abstract     = {{All-inorganic halide perovskite nanowires (NWs) exhibit improved thermal and hydrolysis stability and could thus play a vital role in nanoscale optoelectronics. Among them, blue-light-based devices are extremely limited because of the lack of a facile method to obtain high-purity CsPbCl3 NWs. Herein, we report a direct and facile method for the synthesis of CsPbCl3 NWs assisted by inorganic ions that served both as a morphology controlling agent for the anisotropic growth of nanomaterials and a surface passivation species modulating the surface of nanomaterials. This new approach allows us to obtain high-purity and size-uniform NWs as long as 500 nm in length and 20 nm in diameter with high reproducibility. X-ray photoelectron spectroscopy and ultrafast spectroscopic measurements confirmed that a reduced band gap caused by the surface species of NWs relative to nanocubes (NCs) was achieved at the photon energy of 160 eV because of the hybrid surface passivation contributed by adsorbed inorganic ions. The resulting NWs demonstrate significantly enhanced photoelectrochemical performances, 3.5-fold increase in the photocurrent generation, and notably improved stability compared to their NC counterparts. Our results suggest that the newly designed NWs could be a promising material for the development of nanoscale optoelectronic devices.}},
  author       = {{Tang, Y and Cao, X. and Honarfar, Alireza and Abdellah, Mohamed and Chen, C and Avila, J. and Asensio, L and Hammarström, Leif and J, Sa and Canton, Sophie E and Zheng, Kaibo and Pullerits, Tönu and Chi, Qijin}},
  issn         = {{1944-8244}},
  language     = {{eng}},
  number       = {{35}},
  pages        = {{29574--29582}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{ACS Applied Materials and Interfaces}},
  title        = {{Inorganic Ions Assisted Anisotropic Growth of CsPbCl3 Nanowires with Surface Passivation Effect}},
  url          = {{http://dx.doi.org/10.1021/acsami.8b09113}},
  doi          = {{10.1021/acsami.8b09113}},
  volume       = {{10}},
  year         = {{2018}},
}