journal article·2019-02-08

Efficient All-Polymer Solar Cells based on a New Polymer Acceptor Achieving 10.3% Power Conversion Efficiency

Huatong Yao, Fujin Bai, Huawei Hu, Lingeswaran Arunagiri, Jianquan Zhang, Yuzhong Chen, Han Yu, Shangshang Chen, Tao Liu, Joshua Yuk Lin Lai, Yingping Zou, Harald Ade, He Yan

ACS Energy Letters· Volume 4· Issue 2
Publisher page

Abstract

Here we demonstrate efficient all-polymer solar cells (all-PSCs) based on a polymer acceptor named PFBDT-IDTIC. By combining PFBDT-IDTIC with a fluorinated donor polymer (PM6), a high power conversion efficiency of 10.3% can be achieved, which is the highest value reported to date for single-junction all-PSCs. This performance can be attributed to its good absorption property (absorption coefficient: 2.74 × 105 cm–1) and high electron mobility of PFBDT-IDTIC. It is also found that the choice of donor polymer has major impacts on the performance of the cell. By replacing PBDB-T with its fluorinated counterpart, PM6, the VOC, JSC, and FF of the devices were all improved, which can be attributed to the deeper HOMO level of PM6 and more crystalline and pure domains of the active layer blends. Our study provides a promising polymer acceptor for all-PSCs and also shows that selecting a matching donor polymer is important in achieving the optimal all-PSC performance.
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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

Hong Kong University of Science and Technology-Shenzhen Research Institute, No. 9 Yuexing 1st Road, Hi-tech Park, Nanshan, Shenzhen 518057, People’s Republic of China

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, Hong Kong

Department of Physics and Organic and Carbon Electronics Laboratory, North Carolina State University, Raleigh, North Carolina 27695, United States

College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China

Funding

Research Grants Council, University Grants Committee · Ministry of Science and Technology of the People's Republic of China · Innovation and Technology Commission · National Natural Science Foundation of China · Hong Kong University of Science and Technology · HK Jebn Limited

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