journal article·2024-08Open access

Precisely Controlling Polymer Acceptors with Weak Intramolecular Charge Transfer Effect and Superior Coplanarity for Efficient Indoor All‐Polymer Solar Cells with over 27% Efficiency

Bosen Zou, Ho Ming Ng, Han Yu, Pengbo Ding, Jia Yao, Dezhang Chen, Sai Ho Pun, Huawei Hu, Kan Ding, Ruijie Ma, Memoona Qammar, Wei Liu, Weiwei Wu, Joshua Yuk Lin Lai, Chaoyue Zhao, Mingao Pan, Liang Guo, Jonathan E. Halpert, Harald Ade, Gang Li, He Yan

Advanced Materials· Volume 36· Issue 32

Abstract

Abstract Indoor photovoltaics (IPVs) are garnering increasing attention from both the academic and industrial communities due to the pressing demand of the ecosystem of Internet‐of‐Things. All‐polymer solar cells (all‐PSCs), emerging as a sub‐type of organic photovoltaics, with the merits of great film‐forming properties, remarkable morphological and light stability, hold great promise to simultaneously achieve high efficiency and long‐term operation in IPV's application. However, the dearth of polymer acceptors with medium‐bandgap has impeded the rapid development of indoor all‐PSCs. Herein, a highly efficient medium‐bandgap polymer acceptor (PYFO‐V) is reported through the synergistic effects of side chain engineering and linkage modulation and applied for indoor all‐PSCs operation. As a result, the PM6:PYFO‐V‐based indoor all‐PSC yields the highest efficiency of 27.1% under LED light condition, marking the highest value for reported binary indoor all‐PSCs to date. More importantly, the blade‐coated devices using non‐halogenated solvent (o‐xylene) maintain an efficiency of over 23%, demonstrating the potential for industry‐scale fabrication. This work not only highlights the importance of fine‐tuning intramolecular charge transfer effect and intrachain coplanarity in developing high‐performance medium‐bandgap polymer acceptors but also provides a highly efficient strategy for indoor all‐PSC application.
Source: crossref · 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

Department of Chemistry and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction Hong Kong University of Science and Technology Clear Water Bay Kowloon 999077 Hong Kong

Guangdong‐Hong Kong Joint Laboratory for Carbon Neutrality Jiangmen Laboratory of Carbon Science and Technology Jiangmen Guangdong Province 529199 China

Department of Chemistry Hong Kong University of Science and Technology (HKUST) Kowloon Hong Kong SAR 999077 Hong Kong

Department of Mechanical and Energy Engineering Southern University of Science and Technology Shenzhen 518055 China

State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University Shanghai 201620 China

Department of Physics and Organic and Carbon Electronics Laboratories (ORaCEL) North Carolina State University Raleigh NC 27695 USA

Department of Electrical and Electronic Engineering Research Institute for Smart Energy (RISE) Photonic Research Institute (PRI) The Hong Kong Polytechnic University Hung Hom, Kowloon Hong Kong 999077 P. R. China

Funding

National Key Research and Development Program of China · Shenzhen Fundamental Research Program · Innovative Research Group Project of the National Natural Science Foundation of China · Basic and Applied Basic Research Foundation of Guangdong Province

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