Tuning the Intermolecular Electrostatic Interaction toward High-Efficiency and Low-Cost Organic Solar Cells

Zi Li; Huifeng Yao; Lijiao MaJingwen WangZhaozhao BiShijie WangSusanne SeibtTao ZhangYe XuJunzhen RenYang XiaoCunbin AnWei MaJianhui Hou

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Tuning the Intermolecular Electrostatic Interaction toward High-Efficiency and Low-Cost Organic Solar Cells

机译：Tuning the Intermolecular Electrostatic Interaction toward High-Efficiency and Low-Cost Organic Solar Cells

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Organic solar cells (OSCs) have achieved much progress with rapidlyincreasing power conversion efficiencies (PCEs). It should be noted that thetop-performance OSCs are generally consisted of active materials with complexchemical structures, resulting in high costs. Here, combining the materialdesign and morphology control, high-efficiency OSCs are fabricated bya low-cost donor: acceptor blend. A completely non-fused electron acceptornamed Tz is designed and synthesized via introducing thiazole units on bothsides of a bithiophene core, which shows an outstanding PCE of 13.3 witha typical polythiophene donor. More importantly, optimization guidelines arepresented to get excellent morphology for low-cost donor:acceptor systems.Three polythiophenes are selected, poly(3-hexylthiophene) and its two derivativeswith electron-withdrawing substitutions (PDCBT and PDCBT-2F), asdonors to fabricate the cell devices. The computational and experimentaldata reveal that decreasing the electrostatic interaction between polythiopheneand Tz is the key to getting a suppressed miscibility and thus a highphase purity. This study provides insight into the molecular design anddonor:acceptor matching requirements for high-efficiency and low-cost OSCs.

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来源
《Advanced functional materials》 |2023年第26期|2300202.1-2300202.7|共7页
作者
Zi Li; Huifeng Yao; Lijiao MaJingwen WangZhaozhao BiShijie WangSusanne SeibtTao ZhangYe XuJunzhen RenYang XiaoCunbin AnWei MaJianhui Hou;
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作者单位

State Key Laboratory of Polymer Physics and ChemistryBeijing National Laboratory for Molecular SciencesCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190, China;

State Key Laboratory of Polymer Physics and ChemistryBeijing National Laboratory for Molecular SciencesCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190, China,University of C;

State Key Laboratory for Mechanical Behavior of MaterialsXi’an Jiaotong UniversityXi’an 710049, ChinaAustralian SynchrotronANSTO800 Blackburn Road, Clayton, Victoria 3168, Australia;

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正文语种英语
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low-cost morphology controls; miscibility; molecular electrostatic potential; organic solar cells;

Tuning the Intermolecular Electrostatic Interaction toward High-Efficiency and Low-Cost Organic Solar Cells

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