Multifunctional Molecular Design of a New Fulleropyrrolidine Electron Transport Material Family Engenders High Performance of Perovskite Solar Cells

Xing Zhou; Liu Fu; Li Shu-HuiChen Zuo-ChangAn Ming-WeiZheng ShizhaoJen Alex K. -Y.Yang Shihe

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Multifunctional Molecular Design of a New Fulleropyrrolidine Electron Transport Material Family Engenders High Performance of Perovskite Solar Cells

机译：Multifunctional Molecular Design of a New Fulleropyrrolidine Electron Transport Material Family Engenders High Performance of Perovskite Solar Cells

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6,6-phenyl-C-61-butyric acid methyl ester remains indispensable as the electron transport material (ETM) for perovskite solar cells (PSCs), but its synthesis involves complicated multisteps with low productivity. In contrast, the potential of synthesizing simpler fulleropyrrolidine derivatives has long been overlooked, and little has been understood regarding their structure-dependent effects on photovoltaic (PV) performance. Herein, seven novel fulleropyrrolidine derivatives (F1-F7) are deliberately designed, synthesized, and comprehensively characterized in both solution and thin-film states and subsequently investigated as ETMs for PSCs. Notably, the F4 delivers the highest power conversion efficiencies over 20 of devices, which surpass all reported fulleropyrrolidine ETMs due to its optimal photoelectric property. Moreover, the structure-dependent effects of the fullerenes on PV parameters are uncovered, including solubility, intermolecular interaction, packing structure, and charge-transfer ability, which can guide the future design of high-performance and stable fullerene ETMs for PSCs.

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《Advanced functional materials》 |2021年第51期|2107695.1-2107695.8|共8页
作者
Xing Zhou; Liu Fu; Li Shu-HuiChen Zuo-ChangAn Ming-WeiZheng ShizhaoJen Alex K. -Y.Yang Shihe;
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Peking Univ, Shenzhen Grad Sch, Sch Chem Biol & Biotechnol, Guangdong Prov Key Lab Nanomicro Mat Res, Shenzhen 518055, Peoples R China;

City Univ Hong Kong, Dept Chem, Kowloon, Hong Kong 999077, Peoples R China;

Peking Univ, Shenzhen Grad Sch, Sch Chem Biol & Biotechnol, Guangdong Prov Key Lab Nanomicro Mat Res, Shenzhen 518055, Peoples R China|Shenzhen Bay Lab, Inst Biomed Engn, Shenzhen 518055, Peoples R ChinaXiamen Univ, iChEM Collaborat Innovat Ctr Chem Energy Mat, State Key Lab Phys Chem Solid Surfaces, Dept Chem,Coll Chem & Chem Engn, Xiamen 361005, Peoples R ChinaGuangxi Normal Univ, Sch Chem & Pharmaceut Sci, State Key Lab Chem & Mol Engn Med Resources, Guilin 541004, Peoples R China;

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electron transport materials; fullerenes; intermolecular interactions; perovskite solar cells; packing structures;

Multifunctional Molecular Design of a New Fulleropyrrolidine Electron Transport Material Family Engenders High Performance of Perovskite Solar Cells

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