journal article·2024-02-14

Noncovalent Interaction Boosts Performance and Stability of Organic Solar Cells Based on Giant-Molecule Acceptors

Jiaxun Peng, Fei Meng, Jing Cheng, Xue Lai, Mengzhen Du, Meihua Huang, Jianqi Zhang, Feng He, Erjun Zhou, Dongbing Zhao, Bin Zhao

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Abstract

Designing giant-molecule acceptors is deemed as an up-and-coming strategy to construct stable organic solar cells (OSCs) with high performance. Herein, two giant dimeric acceptors, namely, DYV and DYFV, have been designed and synthesized by linking two Y-series derivatives with a vinyl unit. DYFV exhibits more red-shifted absorption, down-shifted energy levels, and enhanced intermolecular packing than DYV because the intramolecular noncovalent interaction (H···F) of DYFV leads to better coplanarity of the backbone. The D18:DYFV film owns a distinct nanofibrous nanophase separation structure, a more dominant face-on orientation, and more balanced carrier mobilities. Therefore, the D18:DYFV OSC achieves a higher photoelectron conversion efficiency of 17.88% and a longer-term stability with a t 80 over 45,000 h compared with the D18:DYV device. The study demonstrates that the intramolecular noncovalent interaction is a superior strategy to design giant-molecule acceptors and boost the photovoltaic performance and stability of the OSCs.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Organic Electronics and Photovoltaics · Conducting polymers and applications · Perovskite Materials and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China

State Key Laboratory and Institute of Elemento-Organic Chemistry College of Chemistry, Nankai University, 94 Weijin Road, Tianjin 300071, China

Shenzhen Grubbs Institute and Department of Chemistry and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China

School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China

CAS Key Laboratory of Nanosystem and Hierarchical Fabrication National Center for Nanoscience and Technology, Beijing 100190, China

Funding

Ministry of Education of the People's Republic of China · Scientific Research Foundation of Hunan Provincial Education Department · National Natural Science Foundation of China · Hunan 2011 Collaborative Innovation Centre of Chemical Engineering & Technology with Environmental Benignity and Effective Resource Utilization · Hunan Province

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