Enhanced Photovoltaic Performance of Low‐Bandgap Polymers with Deep LUMO Levels | Zendy

Zhou Huaxing | Zendy; Yang Liqiang | Zendy; Price Samuel C. | Zendy; Knight Kelly Jane | Zendy; You Wei | Zendy

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Enhanced Photovoltaic Performance of Low‐Bandgap Polymers with Deep LUMO Levels

Author(s) -

Zhou Huaxing,

Yang Liqiang,

Price Samuel C.,

Knight Kelly Jane,

You Wei

Publication year - 2010

Publication title -

angewandte chemie international edition

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 1433-7851

DOI - 10.1002/anie.201003357

Subject(s) - band gap , benzene , homo/lumo , polymer , acceptor , pyridine , unit (ring theory) , photovoltaic system , energy conversion efficiency , materials science , chemistry , optoelectronics , molecule , organic chemistry , physics , mathematics , electrical engineering , condensed matter physics , mathematics education , engineering

Mind the gap! Polymers synthesized by replacing the benzene unit in the acceptor 4,7‐dithien‐2‐yl‐2,1,3‐benzothiadiazole (DTBT) with a π‐electron‐deficient pyridine unit (DTPyT) show a smaller bandgap than their DTBT counterparts. Power conversion efficiencies of over 6 % are demonstrated in solar cell studies (see picture; PNDT, PQDT, and PBnDT represent dithiophene derivatives as weak donors).

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