Title |
“Double-Cable” Conjugated Polymers with Linear Backbone toward High Quantum Efficiencies in Single-Component Polymer Solar Cells
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Published in |
Journal of the American Chemical Society, December 2017
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DOI | 10.1021/jacs.7b10499 |
Pubmed ID | |
Authors |
Guitao Feng, Junyu Li, Fallon J. M. Colberts, Mengmeng Li, Jianqi Zhang, Fan Yang, Yingzhi Jin, Fengling Zhang, René A. J. Janssen, Cheng Li, Weiwei Li |
Abstract |
A series of "double-cable" conjugated polymers were developed for application in efficient single-component polymer solar cells, in which high quantum efficiencies could be achieved due to the optimized nanophase separation between donor and acceptor parts. The new double-cable polymers contain electron-donating poly(benzodithiophene) (BDT) as linear conjugated backbone for hole transport and pendant electron-deficient perylene bisimide (PBI) units for electron transport, connected via a dodecyl linker. Sulfur and fluorine substituents were introduced to tune the energy levels and crystallinity of the conjugated polymers. The double-cable polymers adopt a "face-on" orientation in which the conjugated BDT backbone and the pendant PBI units have a preferential π-π stacking direction perpendicular to the substrate, favorable for interchain charge transport normal to the plane. The linear conjugated backbone acts as a scaffold for the crystallization of the PBI groups, to provide a double-cable nanophase separation of donor and acceptor phases. The optimized nanophase separation enables efficient excition dissociation as well as charge transport as evidenced from the high, up to 80%, internal quantum efficiency for photon-to-electron conversion. In single-component organic solar cells the double-cable polymers provide power conversion efficiency up to 4.18%. This is one of the highest performances in single-component organic solar cells. The nanophase separated design can likely be used to achieve high performance single-component organic solar cells. |
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Japan | 1 | 50% |
Australia | 1 | 50% |
Demographic breakdown
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Members of the public | 2 | 100% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
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Unknown | 61 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
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Student > Ph. D. Student | 15 | 25% |
Researcher | 10 | 16% |
Student > Doctoral Student | 6 | 10% |
Student > Master | 5 | 8% |
Student > Bachelor | 4 | 7% |
Other | 4 | 7% |
Unknown | 17 | 28% |
Readers by discipline | Count | As % |
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Chemistry | 19 | 31% |
Materials Science | 8 | 13% |
Engineering | 5 | 8% |
Physics and Astronomy | 3 | 5% |
Energy | 2 | 3% |
Other | 2 | 3% |
Unknown | 22 | 36% |