acid treatment of titania pastes to create scattering layers in dye-sensitized solar cells

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2012
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Abstract
In dye-sensitized solar cells (DSC) scattering layers are used to increase the path length of light incident on the TiO2 film. This is typically achieved by the deposition of an additional TiO2 layer on top of an existing transparent film and designed to trap light. In this work we show that a simple acid pretreatment can lead to the formation of a scattering “skin” on the surface of a single TiO2 film performing a similar function to a scattering layer without any additional depositions. This is important in increasing manufacturing throughput for DSCs as further TiO2 depositions require additional materials and heat treatment. The pretreatment leads to self-assembly of a scattering layer of TiO2 which covers the surface on short-term immersion (<30 min) and penetrates the bulk layer upon longer immersion. The method has been shown to increase the efficiency of the device by 20%.
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watson2012internationalacid Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Trystan Watson;Cecile Charbonneau;Daniel Bryant;David Worsley
Journal construction and building materials
Year 2012
DOI
10.1155/2012/637839
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