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Issue 30, 2009
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Synthesis and photovoltaic performance of a series of small band gap polymers

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Abstract

A series of four small band gap polymers have been synthesized and have been incorporated into bulk heterojunction solar cells. The polymers were prepared via Yamamoto coupling and consist of alternating electron-rich dithiophene and electron-deficient bisquinoxaline or thienopyrazine units. In the thin solid films the optical band gaps (Eg) vary from 1.38 eV for the bisquinoxaline to 1.21 eV for thienopyrazine containing polymers. All polymers provide a photovoltaic response when blended with a methanofullerene as electron acceptor in the near infrared region up to the optical band gap. The best cells reach an efficiency of η = 1.5% under estimated standard solar light conditions (AM1.5G, 100 mW/cm2).

Graphical abstract: Synthesis and photovoltaic performance of a series of small band gap polymers

  • This article is part of the themed collection: Solar cells
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Publication details

The article was received on 08 Dec 2008, accepted on 11 Feb 2009 and first published on 17 Mar 2009


Article type: Paper
DOI: 10.1039/B821979F
J. Mater. Chem., 2009,19, 5336-5342

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    Synthesis and photovoltaic performance of a series of small band gap polymers

    A. P. Zoombelt, M. Fonrodona, M. G. R. Turbiez, M. M. Wienk and R. A. J. Janssen, J. Mater. Chem., 2009, 19, 5336
    DOI: 10.1039/B821979F

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