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Hydrogen-Bonded Dopant-Free Hole Transport Material Enables Efficient and Stable Inverted Perovskite Solar Cells

Li, Rui LU ; Li, Chongwen ; Liu, Maning LU orcid ; Vivo, Paola ; Zheng, Meng ; Dai, Zhicheng ; Zhan, Jingbo ; He, Benlin ; Li, Haiyan LU and Yang, Wenjun , et al. (2022) In CCS Chemistry 41(9). p.3084-3094
Abstract

Although many dopant-free hole transport materials (HTMs) for perovskite solar cells (PSCs) have been investigated in the literature, novel and useful molecular designs for high-performance HTMs are still needed. In this work, a hydrogen-bonding association system (NH···CO) between amide and carbonyl is introduced into the pure HTM layer. Our study demonstrates that the hydrogen-bonding association can not only significantly increase the HTM's hole transport mobility and functionalize the surface passivation to the perovskite layer, but also form Pb-N coordination bonds at the interface to promote the hole extraction while hindering the interfacial charge recombination. As a result, the PSCs based on dopantfree hydrogen-bonded HTMs can... (More)

Although many dopant-free hole transport materials (HTMs) for perovskite solar cells (PSCs) have been investigated in the literature, novel and useful molecular designs for high-performance HTMs are still needed. In this work, a hydrogen-bonding association system (NH···CO) between amide and carbonyl is introduced into the pure HTM layer. Our study demonstrates that the hydrogen-bonding association can not only significantly increase the HTM's hole transport mobility and functionalize the surface passivation to the perovskite layer, but also form Pb-N coordination bonds at the interface to promote the hole extraction while hindering the interfacial charge recombination. As a result, the PSCs based on dopantfree hydrogen-bonded HTMs can achieve a champion power conversion efficiency (PCE) of 21.62%, which is around 32% higher than the pristine PSC without the hydrogen-bonding association. Furthermore, the dopant-free hydrogen-bonded HTMs based device shows remarkable long-term light stability, retaining 87% of its original value after 500 h continuous illumination, measured at the maximum power point. This work not only provides a potential HTM with hydrogen-bonding association in PSCs, but also demonstrates that introducing hydrogen bonding into the materials is a useful and simple strategy for developing high-performance dopant-free HTMs.

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publishing date
type
Contribution to journal
publication status
published
subject
keywords
dopant-free hole transport material, high efficiency, Hydrogen bonding, inverted perovskite solar cell, stability
in
CCS Chemistry
volume
41
issue
9
pages
11 pages
publisher
Chinese Chemical Society
external identifiers
  • scopus:85137867868
ISSN
2096-5745
DOI
10.31635/ccschem.021.202101483
language
English
LU publication?
no
id
91e52940-cb77-4766-98b8-a61c0bb7b82a
date added to LUP
2023-08-24 12:11:34
date last changed
2023-08-25 10:16:30
@article{91e52940-cb77-4766-98b8-a61c0bb7b82a,
  abstract     = {{<p>Although many dopant-free hole transport materials (HTMs) for perovskite solar cells (PSCs) have been investigated in the literature, novel and useful molecular designs for high-performance HTMs are still needed. In this work, a hydrogen-bonding association system (NH···CO) between amide and carbonyl is introduced into the pure HTM layer. Our study demonstrates that the hydrogen-bonding association can not only significantly increase the HTM's hole transport mobility and functionalize the surface passivation to the perovskite layer, but also form Pb-N coordination bonds at the interface to promote the hole extraction while hindering the interfacial charge recombination. As a result, the PSCs based on dopantfree hydrogen-bonded HTMs can achieve a champion power conversion efficiency (PCE) of 21.62%, which is around 32% higher than the pristine PSC without the hydrogen-bonding association. Furthermore, the dopant-free hydrogen-bonded HTMs based device shows remarkable long-term light stability, retaining 87% of its original value after 500 h continuous illumination, measured at the maximum power point. This work not only provides a potential HTM with hydrogen-bonding association in PSCs, but also demonstrates that introducing hydrogen bonding into the materials is a useful and simple strategy for developing high-performance dopant-free HTMs.</p>}},
  author       = {{Li, Rui and Li, Chongwen and Liu, Maning and Vivo, Paola and Zheng, Meng and Dai, Zhicheng and Zhan, Jingbo and He, Benlin and Li, Haiyan and Yang, Wenjun and Zhou, Zhongmin and Zhang, Haichang}},
  issn         = {{2096-5745}},
  keywords     = {{dopant-free hole transport material; high efficiency; Hydrogen bonding; inverted perovskite solar cell; stability}},
  language     = {{eng}},
  number       = {{9}},
  pages        = {{3084--3094}},
  publisher    = {{Chinese Chemical Society}},
  series       = {{CCS Chemistry}},
  title        = {{Hydrogen-Bonded Dopant-Free Hole Transport Material Enables Efficient and Stable Inverted Perovskite Solar Cells}},
  url          = {{http://dx.doi.org/10.31635/ccschem.021.202101483}},
  doi          = {{10.31635/ccschem.021.202101483}},
  volume       = {{41}},
  year         = {{2022}},
}