articleACS NanoMay 19, 2011Closed access

Electron Mobility and Injection Dynamics in Mesoporous ZnO, SnO 2 , and TiO 2 Films Used in Dye-Sensitized Solar Cells

PTPriti TiwanaPDPablo DocampoMBMichael B. JohnstonHJHenry J. SnaithLMLaura M. Herz

University of Oxford

PubMed
Indexed incrossrefpubmed

Abstract

High-performance dye-sensitized solar cells are usually fabricated using nanostructured TiO(2) as a thin-film electron-collecting material. However, alternative metal-oxides are currently being explored that may offer advantages through ease of processing, higher electron mobility, or interface band energetics. We present here a comparative study of electron mobility and injection dynamics in thin films of TiO(2), ZnO, and SnO(2) nanoparticles sensitized with Z907 ruthenium dye. Using time-resolved terahertz photoconductivity measurements, we show that, for ZnO and SnO(2) nanoporous films, electron injection from the sensitizer has substantial slow components lasting over tens to hundreds of picoseconds, while…

Citation impact

782
total citations
FWCI
20.05
Percentile
100%
References
49
Citations per year

Authors

5

Topics & keywords

Topics
Keywords
  • Materials science
  • Nanoporous
  • Dye-sensitized solar cell
  • Electron mobility
  • Photocurrent
  • Thin film
  • Optoelectronics
  • Photoconductivity
UN Sustainable Development Goals
  • Affordable and clean energy
No related works found for this paper.

Funding