Low-Bandgap Porphyrins for Highly Efficient Organic Solar Cells: Materials,Morphology, and Applications |
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Authors: | Ke Gao Yuanyuan Kan Xuebin Chen Feng Liu Bin Kan Li Nian Xiangjian Wan Yongsheng Chen Xiaobin Peng Thomas P Russell Yong Cao Alex K-Y Jen |
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Affiliation: | 1. State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, 381 Wushan Road, Guangzhou, 510640 P. R. China;2. Department of Materials Science and Engineering, University of Washington, Seattle, WA, 98195-2120 USA;3. Department of Physics and Astronomy, and Collaborative Innovation Center of IFSA (CICIFSA), Shanghai Jiaotong University, Shanghai, 200240 P. R. China;4. South China Normal University, Guangzhou, 510006 P. R. China;5. College of Chemistry, Nankai University, Tianjin, 300071 China;6. Polymer Science and Engineering Department, University of Massachusetts, Amherst, MA, 01003 USA |
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Abstract: | With developments in materials, thin-film processing, fine-tuning of morphology, and optimization of device fabrication, the performance of organic solar cells (OSCs) has improved markedly in recent years. Designing low-bandgap materials has been a focus in order to maximize solar energy conversion. However, there are only a few successful low-bandgap donor materials developed with near-infrared (NIR) absorption that are well matched to the existing efficient acceptors. Porphyrin has shown great potential as a useful building block for constructing low-bandgap donor materials due to its large conjugated plane and strong absorption. Porphyrin-based donor materials have been shown to contribute to many record-high device efficiencies in small molecule, tandem, ternary, flexible, and OSC/perovskite hybrid solar cells. Specifically, non-fullerene small-molecule solar cells have recently shown a high power conversion efficiency of 12% using low-bandgap porphyrin. All these have validated the great potential of porphyrin derivatives as effective donor materials and made DPPEZnP-TRs a family of best low-bandgap donor materials in the OSC field so far. Here, recent progress in the rational design, morphology, dynamics, and multi-functional applications starting from 2015 will be highlighted to deepen understanding of the structure–property relationship. Finally, some future directions of porphyrin-based OSCs are presented. |
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Keywords: | organic solar cells porphyrin solar cell morphology |
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