Unveiling the crystalline packing of Y6 in thin films by thermal induced “backbone-on” orientation

Journal of Materials Chemistry A ◽

10.1039/d1ta05268c ◽

2021 ◽

Author(s):

Yiqun Xiao ◽

Jun Yuan ◽

Guodong Zhou ◽

Ka Chak Ngan ◽

Xinxin Xia ◽

...

Keyword(s):

Thin Films ◽

Solar Cells ◽

Organic Solar Cells ◽

High Performance ◽

Molecular Packing

Researchers are endeavoring to decode the fundamental reasons for the non-fullerene acceptor, Y6, to deliver high-performance organic solar cells. In this manuscript, we tackle this problem from the molecular packing...

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Terminal π–π stacking determines three-dimensional molecular packing and isotropic charge transport in an A–π–A electron acceptor for non-fullerene organic solar cells

Journal of Materials Chemistry C ◽

10.1039/c7tc01310h ◽

2017 ◽

Vol 5 (20) ◽

pp. 4852-4857 ◽

Cited By ~ 119

Author(s):

Guangchao Han ◽

Yuan Guo ◽

Xiaoxian Song ◽

Yue Wang ◽

Yuanping Yi

Keyword(s):

Solar Cells ◽

Charge Transport ◽

Electron Acceptor ◽

Organic Solar Cells ◽

High Performance ◽

Three Dimensional ◽

Molecular Packing ◽

Electron Acceptors ◽

Π Stacking

Three-dimensional molecular packing and isotropic charge transport can be achieved through local π–π stacking between terminal acceptor units for A–π–A electron acceptors toward high-performance non-fullerene organic solar cells.

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High-Performance and Low-Energy Loss Organic Solar Cells with Non-fused Ring Acceptor by Alkyl Chain Engineering

Chemical Engineering Journal ◽

10.1016/j.cej.2021.129768 ◽

2021 ◽

pp. 129768

Author(s):

Dou Luo ◽

Xue Lai ◽

Nan Zheng ◽

Chenghao Duan ◽

Zhaojin Wang ◽

...

Keyword(s):

Solar Cells ◽

Energy Loss ◽

Organic Solar Cells ◽

High Performance ◽

Alkyl Chain ◽

Low Energy ◽

Fused Ring

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A Facile Synthesized Polymer Featuring B‐N Covalent Bond and Small Singlet‐Triplet Gap for High‐Performance Organic Solar Cells

Angewandte Chemie International Edition ◽

10.1002/anie.202016265 ◽

2021 ◽

Vol 60 (16) ◽

pp. 8813-8817

Author(s):

Shuting Pang ◽

Zhiqiang Wang ◽

Xiyue Yuan ◽

Langheng Pan ◽

Wanyuan Deng ◽

...

Keyword(s):

Solar Cells ◽

Organic Solar Cells ◽

High Performance ◽

Covalent Bond

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High performance tandem organic solar cells via a strongly infrared-absorbing narrow bandgap acceptor

Nature Communications ◽

10.1038/s41467-020-20431-6 ◽

2021 ◽

Vol 12 (1) ◽

Author(s):

Zhenrong Jia ◽

Shucheng Qin ◽

Lei Meng ◽

Qing Ma ◽

Indunil Angunawela ◽

...

Keyword(s):

Solar Cells ◽

Power Conversion Efficiency ◽

Conversion Efficiency ◽

Organic Solar Cells ◽

High Performance ◽

Short Circuit ◽

Power Conversion ◽

High Power Conversion Efficiency ◽

Device Structure ◽

Narrow Bandgap

AbstractTandem organic solar cells are based on the device structure monolithically connecting two solar cells to broaden overall absorption spectrum and utilize the photon energy more efficiently. Herein, we demonstrate a simple strategy of inserting a double bond between the central core and end groups of the small molecule acceptor Y6 to extend its conjugation length and absorption range. As a result, a new narrow bandgap acceptor BTPV-4F was synthesized with an optical bandgap of 1.21 eV. The single-junction devices based on BTPV-4F as acceptor achieved a power conversion efficiency of over 13.4% with a high short-circuit current density of 28.9 mA cm−2. With adopting BTPV-4F as the rear cell acceptor material, the resulting tandem devices reached a high power conversion efficiency of over 16.4% with good photostability. The results indicate that BTPV-4F is an efficient infrared-absorbing narrow bandgap acceptor and has great potential to be applied into tandem organic solar cells.

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