Literature DB >> 27606970

Energy-Level Modulation of Small-Molecule Electron Acceptors to Achieve over 12% Efficiency in Polymer Solar Cells.

Sunsun Li1,2, Long Ye3, Wenchao Zhao1,2, Shaoqing Zhang1, Subhrangsu Mukherjee3, Harald Ade3, Jianhui Hou1,2.   

Abstract

Fine energy-level modulations of small-molecule acceptors (SMAs) are realized via subtle chemical modifications on strong electron-withdrawing end-groups. The two new SMAs (IT-M and IT-DM) end-capped by methyl-modified dicycanovinylindan-1-one exhibit upshifted lowest unoccupied molecular orbital (LUMO) levels, and hence higher open-circuit voltages can be observed in the corresponding devices. Finally, a top power conversion efficiency of 12.05% is achieved.
© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Entities:  

Keywords:  end-groups; energy-level modulation; nonfullerene acceptors; polymer solar cells; soft X-ray scattering

Year:  2016        PMID： 27606970     DOI： 10.1002/adma.201602776

Source DB:  PubMed          Journal:  Adv Mater        ISSN： 0935-9648            Impact factor:   30.849


  37 in total

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3.  High electron mobility due to extra π-conjugation in the end-capped units of non-fullerene acceptor molecules: a DFT/TD-DFT-based prediction.

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9.  Knowledge Domain and Emerging Trends in Organic Photovoltaic Technology: A Scientometric Review Based on CiteSpace Analysis.

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10.  Regular Organic Solar Cells with Efficiency over 10% and Promoted Stability by Ligand- and Thermal Annealing-Free Al-Doped ZnO Cathode Interlayer.

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Journal:  Adv Sci (Weinh)       Date:  2017-04-21       Impact factor: 16.806
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