Understanding the influence of carboxylate substitution on the property of high-performance donor polymers in non-fullerene organic solar cells

2018 ◽  
Vol 2 (7) ◽  
pp. 1360-1365 ◽  
Author(s):  
Guofang Yang ◽  
Jing Liu ◽  
Lik-Kuen Ma ◽  
Shangshang Chen ◽  
Joshua Yuk Lin Lai ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
High Performance ◽  
Temperature Dependent ◽  
Alkyl Chains ◽  
Aggregation Property

Carboxylate substitution can enhance crystallinity and introduce purer domains; alkyl chains provide a temperature-dependent aggregation property.

scholarly journals Random terpolymer based on thiophene-thiazolothiazole unit enabling efficient non-fullerene organic solar cells

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Jingnan Wu ◽  
Guangwei Li ◽  
Jin Fang ◽  
Xia Guo ◽  
Lei Zhu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
High Performance ◽  
High Efficiency ◽  
Temperature Dependent ◽  
Polymer Backbone ◽  
Positive Effects ◽  
Highly Sensitive ◽  
Aggregation Property ◽  
Reduced Temperature

Abstract Developing a high-performance donor polymer is critical for achieving efficient non-fullerene organic solar cells (OSCs). Currently, most high-efficiency OSCs are based on a donor polymer named PM6, unfortunately, whose performance is highly sensitive to its molecular weight and thus has significant batch-to-batch variations. Here we report a donor polymer (named PM1) based on a random ternary polymerization strategy that enables highly efficient non-fullerene OSCs with efficiencies reaching 17.6%. Importantly, the PM1 polymer exhibits excellent batch-to-batch reproducibility. By including 20% of a weak electron-withdrawing thiophene-thiazolothiazole (TTz) into the PM6 polymer backbone, the resulting polymer (PM1) can maintain the positive effects (such as downshifted energy level and reduced miscibility) while minimize the negative ones (including reduced temperature-dependent aggregation property). With higher performance and greater synthesis reproducibility, the PM1 polymer has the promise to become the work-horse material for the non-fullerene OSC community.

scholarly journals Temperature-dependent Schottky barrier in high-performance organic solar cells

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Hui Li ◽  
Dan He ◽  
Qing Zhou ◽  
Peng Mao ◽  
Jiamin Cao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Schottky Barrier ◽  
Organic Solar Cells ◽  
High Performance ◽  
Temperature Dependent

Small-molecule acceptors with long alkyl chains for high-performance as-cast nonfullerene organic solar cells

2021 ◽  
Vol 93 ◽  
pp. 106167
Author(s):  
Hao Lin ◽  
Muhammad Abdullah Adil ◽  
Qian Zhang ◽  
Jianqi Zhang ◽  
Qiang Wang
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
High Performance ◽  
Alkyl Chains

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

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

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

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

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

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.

Alcohol-soluble fluorene derivate functionalized with pyridyl groups as a high-performance cathode interfacial material in organic solar cells

2021 ◽  
Author(s):  
Lin Lin ◽  
Zeping Huang ◽  
Yuanqi Luo ◽  
Tingen Peng ◽  
Baitian He ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Photovoltaics ◽  
Organic Solar Cells ◽  
High Performance ◽  
Fluorene Derivative ◽  
Interfacial Material ◽  
Cathode Interlayer

The synthesis and application as a cathode interlayer in organic photovoltaics of a fluorene derivative with pyridyl functional chains are presented.

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