4.8 Article

Photovoltaic Performance of an Ultrasmall Band Gap Polymer

Journal

ORGANIC LETTERS
Volume 11, Issue 4, Pages 903-906

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/ol802839z

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Funding

  1. Dutch Polymer Institute (DPI) [325, 524]

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A conjugated polymer (PBTTQ) that consists of alternating electron-rich bithiophene and electron-deficient thiadiazoloquinoxaline units was synthesized via Yamamoto polymerization with Ni(cod)(2) and provides a band gap of 0.94 eV. This represents one of the smallest band gaps obtained for a soluble conjugated polymer. When applied in a bulk heterojunction solar cell together with [84]PCBM as the electron acceptor, the polymer affords a response up to 1.3 mu m.

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