Naphthalene core-based noncovalently fused-ring electron acceptors: effects of linkage positions on photovoltaic performances

2019 ◽  
Vol 7 (48) ◽  
pp. 15141-15147 ◽  
Author(s):  
Rui Zheng ◽  
Qingxin Guo ◽  
Dan Hao ◽  
Cai’e Zhang ◽  
Wenyue Xue ◽  
...  
Keyword(s):  
Charge Transport ◽  
Structural Variation ◽  
Photovoltaic Performance ◽  
Electron Acceptors ◽  
Molecular Configuration ◽  
Fused Ring

The structural variation by just changing the linkage positions affects the molecular configuration, absorption, packing, charge transport and photovoltaic performance.

Selenium-containing two-dimensional conjugated fused-ring electron acceptor for enhanced crystal packing, charge transport, and photovoltaic performance

2021 ◽  
Author(s):  
Jin-Liang Wang ◽  
Shi-Sheng Wan ◽  
Qiaoqiao Zhao ◽  
Zhao Jiang ◽  
Gui-Zhou Yuan ◽  
...  
Keyword(s):  
Charge Transport ◽  
Electron Acceptor ◽  
Crystal Packing ◽  
Photovoltaic Performance ◽  
Electron Acceptors ◽  
Central Core ◽  
Two Dimensional ◽  
Highly Efficient ◽  
Fused Ring

Recently, despite two-dimensional fused-ring electron acceptors (FREAs) have been attracted more and more attention, design highly efficient two-dimensional FREAs with new heterocycle-based two-dimensional central core is still quite difficult to...

scholarly journals Unraveling the influence of non-fullerene acceptor molecular packing on photovoltaic performance of organic solar cells

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Linglong Ye ◽  
Kangkang Weng ◽  
Jinqiu Xu ◽  
Xiaoyan Du ◽  
Sreelakshmi Chandrabose ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solid State ◽  
Charge Transport ◽  
Organic Solar Cells ◽  
Photovoltaic Performance ◽  
Transport Pathway ◽  
Π Stacking ◽  
Fused Ring ◽  
Efficient Charge ◽  
End Group

AbstractIn non-fullerene organic solar cells, the long-range structure ordering induced by end-group π–π stacking of fused-ring non-fullerene acceptors is considered as the critical factor in realizing efficient charge transport and high power conversion efficiency. Here, we demonstrate that side-chain engineering of non-fullerene acceptors could drive the fused-ring backbone assembly from a π–π stacking mode to an intermixed packing mode, and to a non-stacking mode to refine its solid-state properties. Different from the above-mentioned understanding, we find that close atom contacts in a non-stacking mode can form efficient charge transport pathway through close side atom interactions. The intermixed solid-state packing motif in active layers could enable organic solar cells with superior efficiency and reduced non-radiative recombination loss compared with devices based on molecules with the classic end-group π–π stacking mode. Our observations open a new avenue in material design that endows better photovoltaic performance.

scholarly journals Unraveling the Influence of Non-Fullerene Acceptor Molecular Packing on Phovoltaic Performance of Organic Solar Cells

2020 ◽  
Author(s):  
Yanming Sun ◽  
Linglong Ye ◽  
Kangkang Weng ◽  
Jinqiu Xu ◽  
Xiaoyan Du ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solid State ◽  
Charge Transport ◽  
Organic Solar Cells ◽  
Photovoltaic Performance ◽  
Transport Pathway ◽  
Π Stacking ◽  
Fused Ring ◽  
Efficient Charge ◽  
End Group

Abstract In non-fullerene organic solar cells (OSCs), the long-range structure ordering induced by end group π–π stacking of fused-ring non-fullerene acceptors is considered as the critical factor in realizing efficient charge transport and high power conversion efficiency. Here, we demonstrate that side-chain engineering of non-fullerene acceptors could drive the fused-ring backbone assembly from a π–π stacking mode to an intermixed packing mode, and to a non-stacking mode to refine its solid-state properties. Different from the above-mentioned understanding, we find that close atom contacts in a non-stacking mode can form efficient charge transport pathway through close side atom interactions. The intermixed solid-state packing motif in active layers could enable OSCs with superior efficiency and reduced non-radiative recombination loss compared with devices based on molecules with the classic end-group π–π stacking mode. Our observations provide new insights into the influence of non-fullerene acceptor molecular packing on exciton dissociation, charge transport, and recombination losses, and open a new avenue in material design that endows better photovoltaic performance.

Near-infrared electron acceptors based on terrylene diimides for organic solar cells

2018 ◽  
Vol 6 (39) ◽  
pp. 18808-18812 ◽  
Author(s):  
Ningning Liang ◽  
Kai Sun ◽  
Jiajing Feng ◽  
Yu Chen ◽  
Dong Meng ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Transport ◽  
Absorption Spectra ◽  
Organic Solar Cells ◽  
Near Infrared ◽  
Photovoltaic Performance ◽  
Electron Acceptors ◽  
Electron Donating Groups

The introduction of electron-donating groups into TDI broadens the absorption spectra and enhances the charge transport and photovoltaic performance.

scholarly journals Enhancing photovoltaic performance via aggregation dynamics control in fused‐ring electron acceptor

Aggregate ◽  
2021 ◽  
Author(s):  
Jiayu Wang ◽  
Runyu Zhu ◽  
Shijie Wang ◽  
Yawen Li ◽  
Boyu Jia ◽  
...  
Keyword(s):  
Electron Acceptor ◽  
Photovoltaic Performance ◽  
Fused Ring

Highly efficient fused ring electron acceptors based on a new undecacyclic core

2021 ◽  
Author(s):  
Chun-Ru Wang ◽  
Fuwen Zhao ◽  
Dan He ◽  
Jingming Xin ◽  
Huotian Zhang ◽  
...  
Keyword(s):  
Extinction Coefficient ◽  
Energy Levels ◽  
Electron Acceptors ◽  
Highly Efficient ◽  
Fused Ring ◽  
Nanoscale Morphology

Two FREAs, IUIC-O and IUIC-T, based on an undecacyclic core were developed. IUIC-T having higher extinction coefficient, affords aligned energy levels with PBDB-T, finer nanoscale morphology and more orderly molecular...

scholarly journals Low cost and stable quinoxaline-based hole-transporting materials with a D–A–D molecular configuration for efficient perovskite solar cells

2018 ◽  
Vol 9 (27) ◽  
pp. 5919-5928 ◽  
Author(s):  
Hao Zhang ◽  
Yongzhen Wu ◽  
Weiwei Zhang ◽  
Erpeng Li ◽  
Chao Shen ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Acceptor ◽  
Low Cost ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Molecular Configuration ◽  
Hole Transporting ◽  
The Stability ◽  
Hole Transporting Materials ◽  
Weak Electron

Molecular hole-transporting materials containing a weak electron acceptor core can simultaneously improve the stability and photovoltaic performance of perovskite solar cells.

The regioisomeric bromination effects of fused-ring electron acceptors: modulation of the optoelectronic property and miscibility endowing the polymer solar cells with 15% efficiency

2020 ◽  
Vol 8 (47) ◽  
pp. 25101-25108
Author(s):  
Jianchao Jia ◽  
Jianhua Jing ◽  
Tao Jia ◽  
Kai Zhang ◽  
Jie Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Polymer Solar Cells ◽  
Electron Acceptors ◽  
Optoelectronic Property ◽  
Fused Ring

Regioisomerically brominated fused-ring electron acceptors enable a high-performance PSC with 15.03% efficiency by delicately adjusting the optoelectronic property and miscibility.

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