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Synergistic Fluorine⋅⋅⋅Sulfur Intra- and Intermolecular Interactions on Dopant-Free Hole Transport Material for Efficient and Stable Inverted Perovskite Solar Cells

Li, Rui LU ; Zhang, Jiakang ; Liu, Maning LU orcid ; Matta, Sri Kasi ; Tian, Jingshu ; Deng, Zhifeng ; Russo, Salvy P. ; Vivo, Paola ; Zhou, Zhongmin and Zhang, Haichang (2023) In Solar RRL 7(9).
Abstract

Designing dopant-free small-molecule hole transport materials (HTMs) with self-assembly behavior via noncovalent interactions is considered as one effective strategy to achieve high-performance inverted perovskite solar cells (PSCs). Herein, two donor-π bridge-donor (D–π–D) HTMs are presented, TPASF and TPAOF, containing 3,6-dimethoxythieno[3,2-b]thiophene as a core part with 3-fluoro-N,N-bis(4-(methylthio)phenyl)aniline and 3-fluoro-N,N-bis(4-methoxyphenyl)aniline as side group. The synergistic F⋅⋅⋅S dipole–dipole intra- and intermolecular interactions in TPASF drive the self-assembly of this molecule into a supramolecular nanofibrillar network, leading to high hole mobility, superior interfacial properties, and providing a good growth... (More)

Designing dopant-free small-molecule hole transport materials (HTMs) with self-assembly behavior via noncovalent interactions is considered as one effective strategy to achieve high-performance inverted perovskite solar cells (PSCs). Herein, two donor-π bridge-donor (D–π–D) HTMs are presented, TPASF and TPAOF, containing 3,6-dimethoxythieno[3,2-b]thiophene as a core part with 3-fluoro-N,N-bis(4-(methylthio)phenyl)aniline and 3-fluoro-N,N-bis(4-methoxyphenyl)aniline as side group. The synergistic F⋅⋅⋅S dipole–dipole intra- and intermolecular interactions in TPASF drive the self-assembly of this molecule into a supramolecular nanofibrillar network, leading to high hole mobility, superior interfacial properties, and providing a good growth template for the perovskite layer atop. The corresponding dopant-free TPASF-based inverted devices exhibit a promising power conversion efficiency of 21.01% with a long T 80 lifetime of ≈632 h under operational conditions. This work paves the way for the further development of new dopant-free self-assembled HTM designs for highly efficient and stable inverted PSCs.

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author
; ; ; ; ; ; ; ; and
publishing date
type
Contribution to journal
publication status
published
subject
keywords
dipole–dipole moments, dopant-free hole transport materials, intra- and intermolecular interactions, inverted perovskite solar cells, self-assembly
in
Solar RRL
volume
7
issue
9
article number
2300031
pages
12 pages
publisher
Wiley-VCH Verlag
external identifiers
  • scopus:85149063971
ISSN
2367-198X
DOI
10.1002/solr.202300031
language
English
LU publication?
no
id
00c56ff9-48ce-4753-89ea-6de9f89ef544
date added to LUP
2023-08-24 12:02:33
date last changed
2025-04-04 14:43:17
@article{00c56ff9-48ce-4753-89ea-6de9f89ef544,
  abstract     = {{<p>Designing dopant-free small-molecule hole transport materials (HTMs) with self-assembly behavior via noncovalent interactions is considered as one effective strategy to achieve high-performance inverted perovskite solar cells (PSCs). Herein, two donor-π bridge-donor (D–π–D) HTMs are presented, TPASF and TPAOF, containing 3,6-dimethoxythieno[3,2-b]thiophene as a core part with 3-fluoro-N,N-bis(4-(methylthio)phenyl)aniline and 3-fluoro-N,N-bis(4-methoxyphenyl)aniline as side group. The synergistic F⋅⋅⋅S dipole–dipole intra- and intermolecular interactions in TPASF drive the self-assembly of this molecule into a supramolecular nanofibrillar network, leading to high hole mobility, superior interfacial properties, and providing a good growth template for the perovskite layer atop. The corresponding dopant-free TPASF-based inverted devices exhibit a promising power conversion efficiency of 21.01% with a long T <sub>80</sub> lifetime of ≈632 h under operational conditions. This work paves the way for the further development of new dopant-free self-assembled HTM designs for highly efficient and stable inverted PSCs.</p>}},
  author       = {{Li, Rui and Zhang, Jiakang and Liu, Maning and Matta, Sri Kasi and Tian, Jingshu and Deng, Zhifeng and Russo, Salvy P. and Vivo, Paola and Zhou, Zhongmin and Zhang, Haichang}},
  issn         = {{2367-198X}},
  keywords     = {{dipole–dipole moments; dopant-free hole transport materials; intra- and intermolecular interactions; inverted perovskite solar cells; self-assembly}},
  language     = {{eng}},
  number       = {{9}},
  publisher    = {{Wiley-VCH Verlag}},
  series       = {{Solar RRL}},
  title        = {{Synergistic Fluorine⋅⋅⋅Sulfur Intra- and Intermolecular Interactions on Dopant-Free Hole Transport Material for Efficient and Stable Inverted Perovskite Solar Cells}},
  url          = {{http://dx.doi.org/10.1002/solr.202300031}},
  doi          = {{10.1002/solr.202300031}},
  volume       = {{7}},
  year         = {{2023}},
}