Статья

Binary Organic Solar Cells Breaking 19% via Manipulating the Vertical Component Distribution

Yanan WeiCollege of Materials Science and Opto‐Electronic Technology & Center of Materials Science and Optoelectronics Engineering & CAS Center for Excellence in Topological Quantum Computation & CAS Key Laboratory of Vacuum Physic University of Chinese Academy of Sciences Beijing 100049 ChinaZhihao ChenSchool of Physics State Key Laboratory of Crystal Materials Shandong University Jinan Shandong 250100 ChinaGuanyu LuFrontier Institute of Science and Technology Xi'an Jiaotong University Xi'an 710054 ChinaNa YuCollege of Materials Science and Engineering Donghua University Shanghai 201620 ChinaCongqi LiCollege of Materials Science and Opto‐Electronic Technology & Center of Materials Science and Optoelectronics Engineering & CAS Center for Excellence in Topological Quantum Computation & CAS Key Laboratory of Vacuum Physic University of Chinese Academy of Sciences Beijing 100049 ChinaJinhua GaoCollege of Materials Science and Opto‐Electronic Technology & Center of Materials Science and Optoelectronics Engineering & CAS Center for Excellence in Topological Quantum Computation & CAS Key Laboratory of Vacuum Physic University of Chinese Academy of Sciences Beijing 100049 ChinaXiaobin GuCollege of Materials Science and Opto‐Electronic Technology & Center of Materials Science and Optoelectronics Engineering & CAS Center for Excellence in Topological Quantum Computation & CAS Key Laboratory of Vacuum Physic University of Chinese Academy of Sciences Beijing 100049 ChinaXiaotao HaoSchool of Physics State Key Laboratory of Crystal Materials Shandong University Jinan Shandong 250100 ChinaGuanghao LuFrontier Institute of Science and Technology Xi'an Jiaotong University Xi'an 710054 ChinaZheng TangCollege of Materials Science and Engineering Donghua University Shanghai 201620 ChinaJianqi ZhangKey Laboratory of Nanosystem and Hierarchical Fabrication National Center for Nanoscience and Technology Beijing 100190 ChinaZhixiang WeiKey Laboratory of Nanosystem and Hierarchical Fabrication National Center for Nanoscience and Technology Beijing 100190 ChinaXin ZhangCollege of Materials Science and Opto‐Electronic Technology & Center of Materials Science and Optoelectronics Engineering & CAS Center for Excellence in Topological Quantum Computation & CAS Key Laboratory of Vacuum Physic University of Chinese Academy of Sciences Beijing 100049 ChinaHui HuangCollege of Materials Science and Opto‐Electronic Technology & Center of Materials Science and Optoelectronics Engineering & CAS Center for Excellence in Topological Quantum Computation & CAS Key Laboratory of Vacuum Physic University of Chinese Academy of Sciences Beijing 100049 China

2022en

ABI

Аннотация

The variation of the vertical component distribution can significantly influence the photovoltaic performance of organic solar cells (OSCs), mainly due to its impact on exciton dissociation and charge-carrier transport and recombination. Herein, binary devices are fabricated via sequential deposition (SD) of D18 and L8-BO materials in a two-step process. Upon independently regulating the spin-coating speeds of each layer deposition, the optimal SD device shows a record power conversion efficiency (PCE) of 19.05% for binary single-junction OSCs, much higher than that of the corresponding blend casting (BC) device (18.14%). Impressively, this strategy presents excellent universality in boosting the photovoltaic performance of SD devices, exemplified by several nonfullerene acceptor systems. The mechanism studies reveal that the SD device with preferred vertical components distribution possesses high crystallinity, efficient exciton splitting, low energy loss, and balanced charge transport, resulting in all-around enhancement of photovoltaic performances. This work provides a valuable approach for high-efficiency OSCs, shedding light on understanding the relationship between photovoltaic performance and vertical component distribution.

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Идентификаторы

DOI: 10.1002/adma.202204718

Цитирования и источники

Цитирований: 2Использованных источников: 0

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