Статья

High‐Efficiency Organic Photovoltaics using Eutectic Acceptor Fibrils to Achieve Current Amplification

Ming ZhangLaboratory of Advanced Optoelectronic Materials College of Chemistry Chemical Engineering and Materials Science Soochow University Jiangsu 215123 P. R. ChinaLei ZhuSchool of Chemistry and Chemical Engineering Frontiers Science Center for Transformative Molecules In‐situ Center for Physical Science and Center of Hydrogen Science Shanghai Jiao Tong University Shanghai 200240 P. R. ChinaTianyu HaoSchool of Chemistry and Chemical Engineering Frontiers Science Center for Transformative Molecules In‐situ Center for Physical Science and Center of Hydrogen Science Shanghai Jiao Tong University Shanghai 200240 P. R. ChinaGuanqing ZhouSchool of Chemistry and Chemical Engineering Frontiers Science Center for Transformative Molecules In‐situ Center for Physical Science and Center of Hydrogen Science Shanghai Jiao Tong University Shanghai 200240 P. R. ChinaChaoqun QiuSchool of Chemistry and Chemical Engineering Frontiers Science Center for Transformative Molecules In‐situ Center for Physical Science and Center of Hydrogen Science Shanghai Jiao Tong University Shanghai 200240 P. R. ChinaZhe ZhaoSchool of Chemistry and Chemical Engineering Frontiers Science Center for Transformative Molecules In‐situ Center for Physical Science and Center of Hydrogen Science Shanghai Jiao Tong University Shanghai 200240 P. R. ChinaNicolai F. HartmannNeaspec GmbH Eglfinger Weg 2 Haar 85540 GermanyBiao XiaoKey Laboratory of Optoelectronic Chemical Materials and Devices Ministry of Education School of Chemical and Environmental Engineering Jianghan University Hubei 430056 P. R. ChinaYecheng ZouWei FengHaiming ZhuDepartment of Chemistry Zhejiang University Zhejiang 310027 P. R. ChinaMaojie ZhangLaboratory of Advanced Optoelectronic Materials College of Chemistry Chemical Engineering and Materials Science Soochow University Jiangsu 215123 P. R. ChinaYongming ZhangSchool of Chemistry and Chemical Engineering Frontiers Science Center for Transformative Molecules In‐situ Center for Physical Science and Center of Hydrogen Science Shanghai Jiao Tong University Shanghai 200240 P. R. ChinaYongfang LiLaboratory of Advanced Optoelectronic Materials College of Chemistry Chemical Engineering and Materials Science Soochow University Jiangsu 215123 P. R. ChinaThomas P. RussellDepartment of Polymer Science and Engineering University of Massachusetts Amherst MA 01003 USAFeng LiuSchool of Chemistry and Chemical Engineering Frontiers Science Center for Transformative Molecules In‐situ Center for Physical Science and Center of Hydrogen Science Shanghai Jiao Tong University Shanghai 200240 P. R. China

2021en

ABI

Аннотация

Abstract The intrinsic electronic properties of donor (D) and acceptor (A) materials in coupling with morphological features dictate the output in organic solar cells (OSCs). New physical properties of intimate eutectic mixing are used in nonfullerene‐acceptor‐based D–A 1 –A 2 ternary blends to fine‐tune the bulk heterojunction thin film morphology as well as their electronic properties. With enhanced thin film crystallinity and improved carrier transport, a significant J SC amplification is achieved due to the formation of eutectic fibrillar lamellae and reduced defects state density. Material wise, aligned cascading energy levels with much larger driving force, and suppressed recombination channels confirm efficient charge transfer and transport, enabling an improved power conversion efficiency (PCE) of 17.84%. These results reveal the importance of utilizing specific material interactions to control the crystalline habit in blended films to form a well‐suited morphology in guiding superior performances, which is of high demand in the next episode of OSC fabrication toward 20% PCE.

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Идентификаторы

DOI: 10.1002/adma.202007177

Цитирования и источники

Цитирований: 4Использованных источников: 0

Показатели — AkademScholar