Solar cells from thermally treated polymer/dye blends with good spectral coverage

We report a new photovoltaic material combination that comprises a blend of two conjugated polymers with a molecular dye. The constituents were chosen in order to achieve a wide spectral response. The polymer poly(9,9-bis(2-ethylhexyl)fluorene-2,7-diyl) (PF 2/6) was blended with a polyphenylenevinyl...

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Bibliographic Details
Published in:Synthetic metals 2003-10, Vol.139 (3), p.637-641
Main Authors: Cabanillas-Gonzalez, J., Yeates, S., Bradley, D.D.C.
Format: Article
Language:English
Subjects:
Application fields
Applied sciences
Energy
Exact sciences and technology
Natural energy
Photodiodes
Photovoltaic conversion
Polymer industry, paints, wood
Polymer-dye blends
Solar cells. Photoelectrochemical cells
Solar energy
Technology of polymers
Violanthrone
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Summary:We report a new photovoltaic material combination that comprises a blend of two conjugated polymers with a molecular dye. The constituents were chosen in order to achieve a wide spectral response. The polymer poly(9,9-bis(2-ethylhexyl)fluorene-2,7-diyl) (PF 2/6) was blended with a polyphenylenevinylene derivative, Covion Super Yellow™ (SY), and violanthrone to produce a broad spectral response covering a large part of the visible spectrum. Annealing at 200 °C in air leads to a roughly three-fold improvement in external quantum efficiency (EQE) and produces a structure with >1% EQE at all wavelengths between 350 and 650 nm.
ISSN:0379-6779
1879-3290
DOI:10.1016/S0379-6779(03)00326-6