A High-Field Anodic NiO Nanosponge with Tunable Thickness for Application in p-Type Dye-Sensitized Solar Cells

Umair Sultan, Farzaneh Ahmadloo, Gihoon Cha, Baris Gökcan, Seyedsina Hejazi, Jeong Eun Yoo, Nhat Truong Nguyen, Marco Altomare, Patrik Schmuki, Manuela S. Killian*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

15 Citations (Scopus)

Abstract

Dye-sensitized photocathodes have the potential to significantly contribute to the efficiency of the solar light-To-current conversion in tandem dye-sensitized solar cells (DSSCs). A novel, highly porous nanoarchitecture of NiO is developed in this project. The spongelike material is grown by anodization, shows a virtually crack-free morphology, strongly adheres to the substrate, and can be grown with a controllable thickness of at least up to 6.5 μm. The oxide composition is NiO and the nanosponge exhibits p-Type semiconductive behavior. A doubling of the maximum reported p-Type DSSC efficiency compared to coumarin C343-sensitized NiO nanoparticle photocathodes can be achieved with the NiO nanosponge. The developed dye-sensitized p-Type NiO-based cathodes are promising for application as photocathodes in tandem DSSC devices.

Original languageEnglish
Pages (from-to)7865-7872
Number of pages8
JournalACS Applied Energy Materials
Volume3
Issue number8
DOIs
Publication statusPublished - 24 Aug 2020
Externally publishedYes

Keywords

  • anodization
  • dye-sensitized solar cells
  • nanostructure
  • nickel oxide
  • p-Type
  • photocathode
  • n/a OA procedure

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