Annealing Effect on Titanium Dioxide Layer in Paired Hybrid Carbon Nanotubes - Graphene as Dye Sensitized Solar Cell Working Electrode

Abstract:

Titanium Dioxide (TiO₂) layer was deposited on conductive transparent glass substrate (ITO glass) at room temperature using doctor blade method. The TiO₂ layer was annealed at 450 °C, 550 °C and 650 °C in a vacuum chamber for 1 hour. The morphology and porosity of TiO₂ after annealed at different temperatures were characterized using Scanning Electron Microscopy (SEM), Atomic Force Microscopy (AFM) and Spectrum Parameter Analyzer (SPA). Photocatalytic activity at different annealing temperatures was measured for dye sensitized solar cell that was fabricated using the new in-house carbon nanotubes-graphene hybrid as the dye material. The results showed that, the optimum annealing temperature was 450 °C. At that temperature, the active photocatalytic activity, which was initiated by the anatase TiO₂ formation in paired with hybrid system as the working electrode, has contributed to the highest conversion efficiency of 0.0016% of the device performance.

• Periodical: Applied Mechanics and Materials (Volumes 754-755)
• Pages: 1191-1196
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.754-755.1191
• Online since: April 2015
• Authors: Siti Salwa Mat Isa*, M.R. Muda, Muhammad Mahyiddin Ramli, N.A.M. Hambali
• Keywords: Hybrid Carbon Nanotubes-Graphene, Solar Cell, Titanium Dioxide

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