Enhanced Efficiency Dye Sensitized Solar Cells Through Acid Pre-treatment
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Enhanced Efficiency Dye Sensitized Solar Cells Through Acid Pre-treatment Trystan Watson, Daniel Bryant, and David Worsley. Sustainable Coatings Research Group, Materials Research Centre, Engineering School, Swansea University, Singleton Park, Swansea, SA2 8PP, UK. ([email protected]) ABSTRACT A nitric acid (2M) pre-treatment is shown to increase the efficiency of a standard dye sensitized solar cell mounted on a FTO glass substrate from 4.15% to 5.12%. The pre-treatment involves immersing an FTO glass electrode coated with commercial ethyl cellulose based TiO2 paste for 1-60 minutes prior to sintering at 450 oC. The pre-treatment leads to agglomeration of the TiO2 creating a scattering layer which covers the acid treated surface on short term immersion (
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