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Biphasic TiO2 nanoleafed nanorod electrode for dye-sensitized solar cell

Daneshvar e Asl, S ; Sharif University of Technology | 2020

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  1. Type of Document: Article
  2. DOI: 10.1016/j.physe.2020.114206
  3. Publisher: Elsevier B.V , 2020
  4. Abstract:
  5. The thin-film of hierarchical rutile/anatase TiO2 nanorod/nanoleafs on fluorine-doped tin oxide glass was prepared via a facile method. For this purpose, the hydrothermal method was used for the synthesis of rutile-phase nanorods on the TiO2 seeded FTO, and aqueous chemistry was applied for growing anatase-phase nanoleafs on the nanorods. The structural, morphological, and optical properties of coating characterized, and the thin-film utilized as the photoelectrode for dye-sensitized solar cell. The energy conversion efficiency of the newly developed nanostructure was higher than that of TiO2 nanorod thin-film by 40%. This increase could be ascribed to: (1) superior specific surface area providing dye-holding and light-scattering ability, (2) accelerating charge transport due to direct pathways for photogenerated charge carriers as a result of nanorods presence in the structure, and (3) improving charge separation at the junctions of rutile-phase nanorods and anatase-phase nanoleafs. © 2020 Elsevier B.V
  6. Keywords:
  7. Anataserutile ; Dye-sensitized solar cell ; Hierarchical nanostructure ; Nanoleafed nanorod array ; Titanium dioxide ; Carrier transport ; Conversion efficiency ; Fluorine compounds ; Hydrothermal synthesis ; Light scattering ; Nanocomposites ; Nanorods ; Optical properties ; Oxide minerals ; Thin films ; Tin oxides ; Aqueous chemistry ; Charge separations ; Fluorine doped tin oxide ; Hydrothermal methods ; Nanorod electrodes ; Photoelectrode ; Photogenerated charge carriers ; Properties of coatings ; Dye-sensitized solar cells
  8. Source: Physica E: Low-Dimensional Systems and Nanostructures ; Volume 123 , 2020
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S1386947720305555