Issue 24, 2005

Dye-sensitized TiO2nanotube solar cells: fabrication and electronic characterization

Abstract

TiO2 nanotubes (TNTs) with large aspect ratio and large specific surface area were prepared from P25 (Nippon Aerosil) and applied to dye-sensitized titanium dioxide solar cells (DSSCs). Optimization of fabrication conditions, i.e., pH of the starting paste, sintering temperature for the TiO2 electrodes, electrolyte compositions of DSSCs gave the high conversion efficiency with improved open circuit voltage (Voc) and fill factor (FF) when compared to DSSCs made of P25. The evaluation of dye adsorption and the photo-injected electron transport such as electron diffusion coefficient (D) and electron lifetime (τ) in TNTs electrodes revealed that the higher efficiency resulted from increase of electron density with keeping much longer τ in TNTs electrodes than in P25 electrodes.

Graphical abstract: Dye-sensitized TiO2 nanotube solar cells: fabrication and electronic characterization

Article information

Article type
Paper
Submitted
02 Aug 2005
Accepted
03 Oct 2005
First published
13 Oct 2005

Phys. Chem. Chem. Phys., 2005,7, 4157-4163

Dye-sensitized TiO2 nanotube solar cells: fabrication and electronic characterization

Y. Ohsaki, N. Masaki, T. Kitamura, Y. Wada, T. Okamoto, T. Sekino, K. Niihara and S. Yanagida, Phys. Chem. Chem. Phys., 2005, 7, 4157 DOI: 10.1039/B511016E

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