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TiO2 surface nanostructuring for improved dye loading and light scattering in double-layered screen-printed dye-sensitized solar cells

Jalali, M ; Sharif University of Technology | 2015

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  1. Type of Document: Article
  2. DOI: 10.1007/s10800-015-0852-x
  3. Publisher: Kluwer Academic Publishers , 2015
  4. Abstract:
  5. 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. Graphical Abstract: [Figure not available: see fulltext.]
  6. Keywords:
  7. Surface nanostructuring ; TiO2 ; Charcoal ; Charge transfer ; Dye-sensitized solar cells ; Electrochemical impedance spectroscopy ; Hydrothermal synthesis ; Light scattering ; Nanorods ; Solar cells ; Charge transfer process ; Diffuse reflectance ; DSSC ; Dye loading ; Light-scattering layer ; Nanostructured TiO ; Surface nanostructuring ; TiO ; Loading
  8. Source: Journal of Applied Electrochemistry ; Volume 45, Issue 8 , 2015 , Pages 831-838 ; 0021891X (ISSN)
  9. URL: http://link.springer.com/article/10.1007/s10800-015-0852-x