journal article·2021-11-03

Boosting the Efficiency of Non-fullerene Organic Solar Cells via a Simple Cathode Modification Method

Siyi Ding, Ruijie Ma, Tao Yang, Guangye Zhang, Junli Yin, Zhenghui Luo, Kai Chen, Zongcheng Miao, Tao Liu, He Yan, Dongfeng Xue

ACS Applied Materials & Interfaces· Volume 13· Issue 43
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Abstract

This work demonstrates a simple yet effective method to significantly improve the power conversion efficiency (PCE) of highly efficient non-fullerene organic solar cells by mixing two electron transport materials. The new electron transport layer shows an energy level better aligned with the active layer and an improved morphology that could reduce the active layer-electrode contact. These improvements lead to enhanced charge extraction, better charge selectivity, suppressed exciton recombination, and finally a boosted PCE in the PM6:Y6-based solar cells. When applied in conjunction with the non-halogenated solvent-processed PM6:PY-IT-based active layer, the mixed ETL also gives rise to a leading result for binary all-polymer solar cells (PCE of >16%) with a concurrent increase in VOC, JSC, and FF.
Source: europepmc · Quality: candidate unverified · Source record ↗

Research context

OpenAlex topics: Organic Electronics and Photovoltaics · Conducting polymers and applications · Molecular Junctions and Nanostructures

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

Affiliations

School of Science, Xi’an Key Laboratory of Advanced Photo-electronics Materials and Energy Conversion Device, Xijing University, Xi’an 710123, China

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 999077, Hong Kong, China

Julong College, Shenzhen Technology University, Shenzhen 518118, China

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

State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, China

Multiscale Crystal Materials Research Center, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China

Hong Kong University of Science and Technology-Shenzhen Research Institute, No. 9 Yuexing first RD, Hi-tech Park, Nanshan, Shenzhen 518057, China

Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology (SCUT), Guangzhou 510640, China

Funding

National Natural Science Foundation of China · Natural Science Foundation of Shandong Province · Basic and Applied Basic Research Major Program of Guangdong Province · National Key Research and Development Program of China

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