Abstract
Surface-nanostructured TiO2 nanorods were synthesized hydrothermally at 180 °C. Such nanorods have ‘crack-like’ surfaces that resemble burnt charcoal. Compared to nanorods with relatively smoother surfaces, the charcoal-like nanorods have higher-specific surface areas. By using the nanorods as a light-scattering layer in double-layered dye-sensitized solar cells, the cells based on the charcoal-like nanorods have 20 % higher dye loading and also higher diffuse reflectance compared with cells utilizing ‘smooth’ nanorods. The efficiency of a screen-printed double-layer dye-sensitized solar cell based on the charcoal-like nanorods is higher at 7.29 %. Electrochemical impedance spectroscopy was also carried out to understand the charge transfer process better.
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Jalali, M., Moakhar, R.S., Kushwaha, A. et al. TiO2 surface nanostructuring for improved dye loading and light scattering in double-layered screen-printed dye-sensitized solar cells. J Appl Electrochem 45, 831–838 (2015). https://doi.org/10.1007/s10800-015-0852-x
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DOI: https://doi.org/10.1007/s10800-015-0852-x