Near-infrared absorbing squaraine dye with extended π conjugation for dye-sensitized solar cells

Claudio Magistris, Stefano Martiniani, Nadia Barbero, Jinhyung Park, Caterina Benzi, Assaf Anderson, ChunHung Law, Claudia Barolo and Brian O'Regan

Renewable Energy, 2013, vol. 60, issue C, 672-678

Abstract: A NIR absorbing squaraine dye has been synthesized as a sensitizer for use in dye-sensitized solar cells (DSCs). Following computational calculations, a benz[cd]indole moiety was selected as an electron-rich heterocyclic component and condensed with indole-based emisquaraine bearing a carboxyl group, as an anchor for their immobilization on TiO2, to obtain an unsymmetrical squaraine with extended absorption due to its extensive π conjugation. The cells based on this dye exhibited a spectral response in the near-infrared region over 750 nm in addition to the visible region with a light absorption edge at 900 nm. The cells showed 1.1% efficiency and Incident Photon Current Efficiency (IPCE) of 36% at 800 nm.

Keywords: Dye-sensitized solar cell; Near-infrared; NIR squaraine; DFT calculation (search for similar items in EconPapers)
Date: 2013
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:60:y:2013:i:c:p:672-678

DOI: 10.1016/j.renene.2013.06.018

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