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Issue 38, 2013
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Dye-sensitized solar cells containing plasma jet deposited hierarchically nanostructured TiO2 thin photoanodes

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Abstract

The investigation of dye-sensitized solar cells (DSCs) using a very thin (0.8 to 4.7 μm) transparent photoanode based on a hierarchically nanostructured TiO2 film prepared via Plasma Assisted Supersonic Jet Deposition (PA-SJD), in combination with the DSC benchmark photosensitizer N719, is presented. The cell photovoltages (nearly 0.8 V) and the amount of adsorbed dye and photocurrent densities, normalized over the film thickness, are higher than those of DSCs prepared with thicker (9 μm) conventional screen-printed TiO2 films. A record efficiency value of 5.7% (standard AM 1.5G solar irradiation) for very thin nanostructured titania photoanodes is obtained with a 2 μm PA-SJD TiO2 film. Electrochemical impedance spectroscopy shows that PA-SJD devices are endowed with higher charge recombination resistance (lower recombination losses) and electron lifetimes compared to conventional nanocrystalline films.

Graphical abstract: Dye-sensitized solar cells containing plasma jet deposited hierarchically nanostructured TiO2 thin photoanodes

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Supplementary files

Article information


Submitted
14 Apr 2013
Accepted
19 Jul 2013
First published
22 Jul 2013

J. Mater. Chem. A, 2013,1, 11665-11673
Article type
Paper

Dye-sensitized solar cells containing plasma jet deposited hierarchically nanostructured TiO2 thin photoanodes

V. Trifiletti, R. Ruffo, C. Turrini, D. Tassetti, R. Brescia, F. Di Fonzo, C. Riccardi and A. Abbotto, J. Mater. Chem. A, 2013, 1, 11665
DOI: 10.1039/C3TA11485F

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