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Photodetector Based on Spontaneously Grown Strongly Coupled MAPbBr3/N-rGO Hybrids Showing Enhanced Performance

Tang, Yingying ; Liang, Mingli ; Zhang, Minwei ; Honarfar, Alireza ; Zou, Xianshao LU ; Abdellah, Mohamed LU ; Pullerits, Tönu LU ; Zheng, Kaibo LU and Chi, Qijin (2020) In ACS Applied Materials and Interfaces 12(1). p.858-867
Abstract

Recently, metal-halide perovskites have emerged as a candidate for optoelectronic applications such as photodetectors. However, the poor device performance and instability have limited their future commercialization. Herein, we report the spontaneous growth of perovskite/N-rGO hybrid structures using a facile solution method and their applications for photodetectors. In the hybrid structures, perovskites were homogeneously wrapped by N-rGO sheets through strong hydrogen bonding. The strongly coupled N-rGOs facilitate the charge carrier transportation across the perovskite crystals but also distort the surface lattice of the perovskite creating a potential barrier for charge transfer. We optimize the addition of N-rGO in the hybrid... (More)

Recently, metal-halide perovskites have emerged as a candidate for optoelectronic applications such as photodetectors. However, the poor device performance and instability have limited their future commercialization. Herein, we report the spontaneous growth of perovskite/N-rGO hybrid structures using a facile solution method and their applications for photodetectors. In the hybrid structures, perovskites were homogeneously wrapped by N-rGO sheets through strong hydrogen bonding. The strongly coupled N-rGOs facilitate the charge carrier transportation across the perovskite crystals but also distort the surface lattice of the perovskite creating a potential barrier for charge transfer. We optimize the addition of N-rGO in the hybrid structures to balance interfacial structural distortion and the intercrystal conductivity. High-performance photodetection up to 3 × 104 A/W, external quantum efficiency exceeding 105%, and detectivity up to 1012 Jones were achieved in the optimal device with the weight ratio between perovskites and N-rGO to be 8:1.5. The underlying mechanism behind the optimal N-rGO addition ratio in the hybrids has also been rationalized via time-resolved spectroscopic studies as a reference for future applications.

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author
; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
hybrid material, hydrogen bonding, perovskite/N-rGO, photodetector, time-resolved spectroscopy
in
ACS Applied Materials and Interfaces
volume
12
issue
1
pages
10 pages
publisher
The American Chemical Society (ACS)
external identifiers
  • scopus:85077453046
  • pmid:31820629
ISSN
1944-8244
DOI
10.1021/acsami.9b18598
language
English
LU publication?
yes
id
46075407-c882-402a-8403-e23e4edac45e
date added to LUP
2020-01-20 17:05:42
date last changed
2024-06-13 10:45:15
@article{46075407-c882-402a-8403-e23e4edac45e,
  abstract     = {{<p>Recently, metal-halide perovskites have emerged as a candidate for optoelectronic applications such as photodetectors. However, the poor device performance and instability have limited their future commercialization. Herein, we report the spontaneous growth of perovskite/N-rGO hybrid structures using a facile solution method and their applications for photodetectors. In the hybrid structures, perovskites were homogeneously wrapped by N-rGO sheets through strong hydrogen bonding. The strongly coupled N-rGOs facilitate the charge carrier transportation across the perovskite crystals but also distort the surface lattice of the perovskite creating a potential barrier for charge transfer. We optimize the addition of N-rGO in the hybrid structures to balance interfacial structural distortion and the intercrystal conductivity. High-performance photodetection up to 3 × 10<sup>4</sup> A/W, external quantum efficiency exceeding 10<sup>5</sup>%, and detectivity up to 10<sup>12</sup> Jones were achieved in the optimal device with the weight ratio between perovskites and N-rGO to be 8:1.5. The underlying mechanism behind the optimal N-rGO addition ratio in the hybrids has also been rationalized via time-resolved spectroscopic studies as a reference for future applications.</p>}},
  author       = {{Tang, Yingying and Liang, Mingli and Zhang, Minwei and Honarfar, Alireza and Zou, Xianshao and Abdellah, Mohamed and Pullerits, Tönu and Zheng, Kaibo and Chi, Qijin}},
  issn         = {{1944-8244}},
  keywords     = {{hybrid material; hydrogen bonding; perovskite/N-rGO; photodetector; time-resolved spectroscopy}},
  language     = {{eng}},
  month        = {{01}},
  number       = {{1}},
  pages        = {{858--867}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{ACS Applied Materials and Interfaces}},
  title        = {{Photodetector Based on Spontaneously Grown Strongly Coupled MAPbBr<sub>3</sub>/N-rGO Hybrids Showing Enhanced Performance}},
  url          = {{http://dx.doi.org/10.1021/acsami.9b18598}},
  doi          = {{10.1021/acsami.9b18598}},
  volume       = {{12}},
  year         = {{2020}},
}