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NiCo2O4 Nanostructures as a Promising Alternative for NiO Photocathodes in p-Type Dye-Sensitized Solar Cells with High Efficiency

Journal Article


Abstract

  • NiCo2O4 nanostructures were directly grown on fluorine-doped tin oxide (FTO) conductive substrates by using a facile, low-temperature hydrothermal process and their morphology was precisely adjusted from nanowires (NW) to nanosheets (NS) and novel nanowire-woven nanosheet (NW-NS) arrays. Such nanostructures were then explored for photoelectrodes of p-type dye-sensitized solar cells (DSSCs), in which the conversion efficiency demonstrated a strong dependence on the morphology. NiCo2O4 NW-NS based p-DSSCs showed a high conversion efficiency of 0.785%, which is higher than the values reported for NiO and other materials in p-DSSCs based on the classical I3-/I- electrolyte. The mechanism of enhanced performance was analyzed in detail and mainly attributed to synergistic effects in the photoelectrodes, with a significantly improved efficiency of light harvesting and fast hole transport.

Publication Date

  • 2014

Citation

  • Shi, Z., Lu, H., Liu, Q., Deng, K., Xu, L., Zou, R., . . . Li, L. (2014). NiCo2O4 Nanostructures as a Promising Alternative for NiO Photocathodes in p-Type Dye-Sensitized Solar Cells with High Efficiency. Energy Technology, 2(6), 517-521. doi:10.1002/ente.201400013

Scopus Eid

  • 2-s2.0-84992283375

Web Of Science Accession Number

Start Page

  • 517

End Page

  • 521

Volume

  • 2

Issue

  • 6

Place Of Publication

Abstract

  • NiCo2O4 nanostructures were directly grown on fluorine-doped tin oxide (FTO) conductive substrates by using a facile, low-temperature hydrothermal process and their morphology was precisely adjusted from nanowires (NW) to nanosheets (NS) and novel nanowire-woven nanosheet (NW-NS) arrays. Such nanostructures were then explored for photoelectrodes of p-type dye-sensitized solar cells (DSSCs), in which the conversion efficiency demonstrated a strong dependence on the morphology. NiCo2O4 NW-NS based p-DSSCs showed a high conversion efficiency of 0.785%, which is higher than the values reported for NiO and other materials in p-DSSCs based on the classical I3-/I- electrolyte. The mechanism of enhanced performance was analyzed in detail and mainly attributed to synergistic effects in the photoelectrodes, with a significantly improved efficiency of light harvesting and fast hole transport.

Publication Date

  • 2014

Citation

  • Shi, Z., Lu, H., Liu, Q., Deng, K., Xu, L., Zou, R., . . . Li, L. (2014). NiCo2O4 Nanostructures as a Promising Alternative for NiO Photocathodes in p-Type Dye-Sensitized Solar Cells with High Efficiency. Energy Technology, 2(6), 517-521. doi:10.1002/ente.201400013

Scopus Eid

  • 2-s2.0-84992283375

Web Of Science Accession Number

Start Page

  • 517

End Page

  • 521

Volume

  • 2

Issue

  • 6

Place Of Publication