journal article·2021-07-28

Boosting Highly Efficient Hydrocarbon Solvent-Processed All-Polymer-Based Organic Solar Cells by Modulating Thin-Film Morphology

Le Jin, Ruijie Ma, Heng Liu, Wenhan Xu, Zhenghui Luo, Tao Liu, Wenyan Su, Yuxiang Li, Rui Lu, Xinhui Lu, He Yan, Ben Zhong Tang, Tao Yang

ACS Applied Materials & Interfaces· Volume 13· Issue 29
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Abstract

Many highly efficient all-polymer-based organic solar cells (OSCs) have been achieved owing to material design and device engineering. However, most of them were achieved by using halogenated solvents to process the active layers, being not beneficial to its nature of green energy technology. In this work, we compared chloroform- and toluene-processed PM6:PY-IT-based all-polymer devices with the same blend solution recipe, same film formation speed, and same postcast treatment. The film cast from toluene exhibited weaker crystallinity. For device performance, toluene enabled a better power conversion efficiency (PCE) of 15.51%, outperforming that of chloroform (15.00%), and it is the highest value for non-halogenated solvent-cast all-polymer-based OSCs to date. Toluene's morphology tuning effect was characterized to increase and balance the charge transport and then suppress the exciton recombination and improve the charge extraction, considered to be the reason for efficiency enhancement. Besides, the toluene-cast active layer-based devices showed slightly better photostability than the chloroform-driven ones. This work provided a new direction for building low-toxicity solvent-treated all-polymer OSCs with cutting-edge performance.
Source: openalex_inverted_index · 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

Jiangsu Food & Pharmaceutical Science College, Huai’an, Jiangsu 223003, China

Department of Chemistry 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, China

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

Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Department of Chemistry, Institute of Molecular Functional Materials, State Key Laboratory of Neuroscience, Division of Biomedical Engineering, Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China

Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Siyuan Laboratory, Department of Physics, Jinan University, Guangzhou 510632, China

School of Materials Science and Engineering, Xi’an University of Science and Technology, Xi’an 710054, China

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

Funding

Research Grants Council, University Grants Committee · Ministry of Science and Technology of the People's Republic of China · China Postdoctoral Science Foundation · Jinan University · National Natural Science Foundation of China · Shaanxi Province · Outstanding Youth Science and Technology Foundation, Xi???an University of Science and Technology

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