Optimizations of large area quasi-solid-state dye-sensitized solar cells

In this paper, we address optimizations of dye sensitized solar cells (DSSCs) through the combination of important issues like semi-transparency, quasi-solid-state constructions and low-cost realization of serially connected modules. DSSCs with a transparency of 50% in the visible region, moderate e...

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Bibliographic Details
Published in:Solar energy materials and solar cells 2006-10, Vol.90 (16), p.2575-2588
Main Authors: Biancardo, Matteo, West, Keld, Krebs, Frederik C.
Format: Article
Language:English
Subjects:
Applied sciences
Dye sensitized solar cells
Energy
Exact sciences and technology
Gel
Modules
Natural energy
Photovoltaic conversion
Polymer electrolyte
Solar cells. Photoelectrochemical cells
Solar energy
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Summary:In this paper, we address optimizations of dye sensitized solar cells (DSSCs) through the combination of important issues like semi-transparency, quasi-solid-state constructions and low-cost realization of serially connected modules. DSSCs with a transparency of 50% in the visible region, moderate efficiency ∼ 1 % , and long lifetime allow solar cells application in building elements like windows, façades and semi-transparent roofs. The use in DSSCs of gel polymer electrolytes prepared by liquid electrolyte incorporation into a polymer matrix such as poly-methyl-methacrylate presents encouraging results. A short circuit current ( I sc ) of 4.45 mA cm - 2 with an open circuit voltage ( V oc ) of 0.5 V were recorded in standard solar cells sensitized by cis-bis(thiocyano) ruthenium(II)-bis- 2 , 2 ′ -bipyridine- 4 , 4 ′ -dicarboxylate. Up-scaling tests demonstrate the easy realization of a 625 cm 2 module connected in series which allows power extraction up to ∼ 100 mW with an I sc of 25.1 mA and a V oc of 10.65 V under AM 1.5, 100 mW cm - 2 standard conditions. Losses are minimized by using a low-current/high-voltage coupling scheme.
ISSN:0927-0248
1879-3398
DOI:10.1016/j.solmat.2006.02.012