Simple-Structured Acceptor with Highly Interconnected Electron-Transport Pathway Enables High-Efficiency Organic Solar Cells

Xiaobin Gu; Rui Zeng; Tengfei He; Guanqing Zhou; Congqi Li; Na Yu; Fei Han; Yuqi Hou; Jikai Lv; Ming Zhang; Jianqi Zhang; Zhixiang Wei; Zheng Tang; Haiming Zhu; Yunhao Cai; Guankui Long; Feng Liu; Xin Zhang; Hui Huang

doi:10.1002/adma.202401370

Simple-Structured Acceptor with Highly Interconnected Electron-Transport Pathway Enables High-Efficiency Organic Solar Cells

Adv Mater. 2024 Jun;36(23):e2401370. doi: 10.1002/adma.202401370. Epub 2024 Feb 29.

Authors

Xiaobin Gu¹, Rui Zeng², Tengfei He³, Guanqing Zhou², Congqi Li¹, Na Yu⁴, Fei Han², Yuqi Hou¹, Jikai Lv¹, Ming Zhang², Jianqi Zhang⁵, Zhixiang Wei⁵, Zheng Tang⁴, Haiming Zhu⁶, Yunhao Cai¹, Guankui Long³, Feng Liu², Xin Zhang¹, Hui Huang¹

Affiliations

¹ College 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 Physics, University of Chinese Academy of Sciences, Beijing, 101408, China.
² School 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, China.
³ School of Materials Science and Engineering, National Institute for Advanced Materials, Renewable Energy Conversion and Storage Center (RECAST), Nankai University, Tianjin, 300071, China.
⁴ Center for Advanced Low-Dimension Materials State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China.
⁵ Center for Excellence in Nanoscience (CAS), Key Laboratory of Nanosystem and Hierarchical Fabrication (CAS), National Center for Nanoscience and Technology, Beijing, 100190, China.
⁶ Department of Chemistry, Zhejiang University, Hangzhou, 310058, China.

PMID: 38373399
DOI: 10.1002/adma.202401370

Abstract

Achieving desirable charge-transport highway is of vital importance for high-performance organic solar cells (OSCs). Here, it is shown how molecular packing arrangements can be regulated via tuning the alkyl-chain topology, thus resulting in a 3D network stacking and highly interconnected pathway for electron transport in a simple-structured nonfused-ring electron acceptor (NFREA) with branched alkyl side-chains. As a result, a record-breaking power conversion efficiency of 17.38% (certificated 16.59%) is achieved for NFREA-based devices, thus providing an opportunity for constructing low-cost and high-efficiency OSCs.

Keywords: alkyl‐chain topology; charge transporting properties; low‐cost organic solar cells; nonfused‐ring electron acceptor.

Abstract

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