DataVXAdvanced Energy MaterialsPaper
journal article·2023-08Open access

18.1% Ternary All‐Polymer Solar Cells Sequentially Processed from Hydrocarbon Solvent with Enhanced Stability

Chaoyue Zhao, Ruijie Ma, Yiwen Hou, Liangxiang Zhu, Xinhui Zou, Wenzhao Xiong, Huawei Hu, Lihong Wang, Han Yu, Yajie Wang, Guoping Zhang, Jicheng Yi, Lu Chen, Dan Wu, Tao Yang, Gang Li, Mingxia Qiu, He Yan, Shunpu Li, Guangye Zhang

Advanced Energy Materials· Volume 13· Issue 31
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Source abstract

Abstract

Abstract All‐polymer solar cells (all‐PSCs) have promising potential for industrial production due to their superior stability. Recently, the widespread application of the polymerized small molecule acceptor (PSMA) has led to a surge in the efficiency of all‐PSCs. However, the high efficiencies of these devices generally rely on the use of the highly volatile solvent, chloroform (CF). Furthermore, the molecular weights of PSMA are lower than polymer donors, yet their crystallinity is weaker than typical small molecules, making most PSMA‐based all‐PSCs suffer from low electron mobility. To improve device performance and facilitate large scale production of all‐PSCs, it is necessary to enhance electron mobility and avoid the use of CF. This paper investigates the use of sequential processing (SqP) for active layer preparation using toluene as the solvent to address these issues. This work reports 18.1% efficient all‐PSC devices, which is the highest efficiency of all‐PSCs prepared using non‐halogen solvents. This work systematically compares the conventional blend‐casting method with the SqP method using PM6 as the donor and PY‐V‐γ and PJ1‐γ as the acceptors, and compares the performance of binary and ternary blends in both methods. Finally, this work measures the device stability and finds that SqP can significantly improve the photostability of the device.
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Research context

Polymers

OpenAlex topics: Organic Electronics and Photovoltaics · Thin-Film Transistor Technologies · solar cell performance optimization

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

Affiliations

College of New Materials and New Energies Shenzhen Technology University Shenzhen 518118 China

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

Department of Electronic and Information Engineering Research Institute for Smart Energy (RISE) Guangdong‐Hong Kong‐Macao (GHM) Joint Laboratory for Photonic‐Thermal‐Electrical Energy Materials and Devices The Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong 999077 China

Julong College Shenzhen Technology University Shenzhen 518118 China

Department of Physics Hong Kong University of Science and Technology (HKUST) Clear Water Bay Kowloon Hong Kong 999077 China

State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Center for Advanced Low‐dimension Materials College of Materials Science and Engineering Donghua University Shanghai 201620 China

Funding

National Natural Science Foundation of China · Fundamental Research Funds for the Central Universities

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