journal article·2022-08-12

High-Efficiency Ternary Organic Solar Cells with a Good Figure-of-Merit Enabled by Two Low-Cost Donor Polymers

Ruijie Ma, Cenqi Yan, Jiangsheng Yu, Tao Liu, Heng Liu, Yuhao Li, Jian Chen, Zhenghui Luo, Bo Tang, Xinhui Lu, Gang Li, He Yan

ACS Energy Letters· Volume 7· Issue 8
Publisher page

Abstract

Here, we combine two donor polymers with a relatively short synthesis method and fabricate ternary organic solar cells (OSCs) with a high efficiency and a decent figure-of-merit. A series of characterizations show that the optimal morphology of the ternary blend is the result of the coupling and competition of PTQ10 and PTVT-T, where the molecular packing and phase separation motif of PTQ10 is broken but the strong aggregation of PTVT-T is suppressed, resulting in efficient charge transport and collection, as well as suppressed bimolecular recombination. Moreover, a previously reported solvent-vapor-assisted casting method, taken as an understanding-guided optimization, pushes the optimal system’s efficiency to 19.11%. Furthermore, PTVT-T-containing systems clearly show better light soaking and thermal stability than the PTQ10 binary control system, benefiting from the durable polymer matrix. Our work provides a useful approach for developing efficient, stable, and low-cost OSCs based on state-of-the-art donor/acceptor systems through morphology control of the ternary design.
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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, Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials, Energy Institute, and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration & Reconstruction, 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), The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong 999077, China

Guangxi Key Lab of Processing for Nonferrous Metals and Featured Materials and Key Lab of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, and School of Resources, Environments, and Materials, Guangxi University, Nanning 530004, China

Department of Physics, Chinese University of Hong Kong, Hong Kong, New Territories Hong Kong 999077, China

Fok Ying Tung Research Institue, Hong Kong University of Science and Technology, Guangzhou 511458, China

Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China

College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, and Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Materials and Clean Energy, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, China

HKUST LED-FPD Tech. R&D Center, Foshan, Guangdong 528231, China

HKUST Foshan Research Institute for Smart Manufacturing, Kowloon, Hong Kong 999077, China

Funding

Research Grants Council, University Grants Committee · Guangxi University · Ministry of Science and Technology of the People's Republic of China · Government of Guangdong Province · Foshan Municipal Government · Science, Technology and Innovation Commission of Shenzhen Municipality · Innovation and Technology Commission · National Natural Science Foundation of China · Hong Kong Polytechnic University · Hong Kong University of Science and Technology

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