Abstract
In this paper, dye-sensitized TiO2 electrodes were immersed into a solution of aluminum isopropoxide and after hydrolysis quasi-solid state solar cells were fabricated. The interaction between the dye and the resulting Al2O3 overlayer was investigated by ultraviolet-visible (UV-vis) spectrum and X-ray photoelectron spectrum (XPS). I-V characteristics showed that the overlayer greatly increased photovoltage and slightly decreased photocurrent under irradiation of low intensity, and increased both photovoltage and photocurrent under AM 1.5 irradiation. The Al2O3 overlayer at the dye/electrolyte interface results in a 28% improvement in overall photo-to-electrical conversion efficiency from 2.60% to 3.32% under illumination of light intensity 100 mW/cm2. Dark current measurements show that Al2O3 acting as insulator barriers to retard recombination between TiO2, dye/quasi-solid state electrolyte interface.
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© 2008 Tsinghua University Press, Bei**g and Springer-Verlag GmbH Berlin Heidelberg
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Luo, F., Wang, L., Ma, B., Qiu, Y. (2008). Alumina Post-Modification After Dye-Sensitization: Effect on the Performance of Quasi-Solid State Solar Cells. In: Goswami, D.Y., Zhao, Y. (eds) Proceedings of ISES World Congress 2007 (Vol. I – Vol. V). Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-75997-3_255
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DOI: https://doi.org/10.1007/978-3-540-75997-3_255
Publisher Name: Springer, Berlin, Heidelberg
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