TiO2/TaON- and TiO2/BiOI-based solid-state solar cells

Bashir Ahmmad, Junichi Kurawaki, Takahiro Ohkubo, Fumihiko Hirose

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


A three-phase solid-state solar cell (SSSC) has been developed successfully using TaON nanoparticles or BiOI microspheres as a sensitizer material over a TiO2 film and CuI as a hole collector. Stable current (I sc)-voltage (Voc) curves are found under ultraviolet UV visible light irradiation with an efficiency of 0.15% and 0.10% for TaON- and BiOI-based solar cells, respectively. The observed photocurrents in SSSCs are approximately 10 and 48 times higher than those in wet-type solar cells (WSCs) based on TaON and BiOI, respectively. A plausible mechanism of charge transfer and hole filling is discussed in terms of the band gap energy and band position of the semiconductor materials.

Original languageEnglish
Pages (from-to)338-342
Number of pages5
JournalJournal of Energy Engineering
Issue number4
Publication statusPublished - Dec 2013


  • Bismuth oxyiodide (BiOI)
  • Solid-state solar cell (SSSC)
  • Tantalum oxynitride (TaON)

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Energy Engineering and Power Technology
  • Waste Management and Disposal


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