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non-conjugated terpolymer acceptors for highly efficient and stable lager-area all-polymer solar cells

Journal of Energy Chemistry 2022年第8期31卷 631-638,I0017页

作者： Jiabin Liu Jinliang Liu Jiawei Deng Bin Huang Jiyeon Oh Lin Zhao Liang Liu Changduk Yang Dong Chen Feiyan Wu Lie Chen College of Chemistry and Chemical Engineering/Institute of Polymers and Energy Chemistry(IPEC) Nanchang UniversityNanchang 330031JiangxiChina Institute of Advanced Scientific Research(iASR)/Key Laboratory of Functional Organic Small Molecules for Ministry of Education Jiangxi Normal UniversityNanchang 330022JiangxiChina Faculty of Materials Metallurgy and Chemistry Jiangxi University of Science and Technology 156 Ke Jia AvenueGanzhou 341000JiangxiChina Department of Energy Engineering School of Energy and Chemical EngineeringPerovtronics Research CenterLow Dimensional Carbon Materials CenterUlsan National Institute of Science and Technology(UNIST)50 UNIST-gilUlju-gunUlsan 44919South Korea

All-polymer solar cells(all-PSCs)have made significant progress recently,but few studies have been conducted to investigate the lab-to-manufacturing translation from the spin-coating method to the printing process.Here,the random copolymerization method and non-conjugated backbone approach are integrated to manipulate the morphology and photoelectric properties of the active layer for large-area printed all-PSCs.A series of non-conjugated terpolymer acceptors PYSe-TC_(6)T(x)(x=5,10,and 20,refers to the molar ratio of TC_(6)T unit)are developed by covalently introducing non-conjugated unit TC_(6)T into the PYSe host bipolymer by random copolymerization.The spin-coated PYSe-TC_(6)T(10)-based all-PSC demonstrates the best power conversion efficiency(PCE)of 13.54%,superior to the PYSe-based one(12.45%).More intriguingly,morphological studies reveal that a combination of the random polymerization and non-conjugated backbone strategy can effectively prevent the active layer from overaggregation and improve the film quality during the printing process,thereby minimizing the efficiency and technology gap between spin-coated small-area devices and blade-coated large-area devices.By directly using the same preparation condition of spin-coating,the blade-coated small-area(0.04 cm^(2))delivers a PCE of 12.83%and the large-area(1.21 cm^(2))device achieves a PCE of 11.96%with a small PCE loss.Both PCE value and PCE loss are one of the most outstanding performances of the bladecoated all-PSCs.These findings reveal that a combination of the non-conjugated flexible backbone with random copolymerization to develop non-conjugated terpolymers is an attractive design concept to smoothly realize the lab-to-manufacturing translation.

关键词： All-polymer non-conjugated Large area Blade-coating Lab-to-manufacturing translation

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Radical Cation Diels-Alder Reactions of non-conjugated Alkenes as Dienophiles by Electrocatalysis

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Chinese Journal of Chemistry 2019年第6期37卷 561-564页

作者： Atsushi Ozaki Yusuke Yamaguchi Yohei Okada Kazuhiro Chiba Department of Applied Biological Science Tokyo University of Agriculture and Technology3-5-8 Saiwai-choFuchuTokyo 183-8509Japan Department of Chemical Engineering Tokyo University of Agriculture and Technology2-24-16 Naka-choKoganeiTokyo 184-8588Japan

Radical cation Diels-Alder reactions provide a powerful method for the construction of six-membered ring systems between both electron-rich dienes and dienophiles. However, the most recent examples of this class have been limited to β-methylstyrenes as dienophiles;the use of non-conjugated alkenes remains challenging. The present study describes the serendipitous development of novel radical cation Diels-Alder reactions by electrocatalysis that use non-conjugated alkenes as dienophiles. The key to successful transformation involves highly substituted cyclohexenyl radical cations that are stable enough to be reduced by intermolecular single electron transfer.

关键词： radical cation Diels-Alder reaction non-conjugated alkene electrochemistry single electron transfer

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