DGIST Scholar: Effect of TiCl4 Post-Treatment on the Embedded-Type TiO2 Nanotubes Dye-Sensitized Solar Cells

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Effect of TiCl4 Post-Treatment on the Embedded-Type TiO2 Nanotubes Dye-Sensitized Solar Cells

Title: Effect of TiCl4 Post-Treatment on the Embedded-Type TiO2 Nanotubes Dye-Sensitized Solar Cells

Author(s): Kim, Kang-Pil ; Kim, Jeong-Hwa ; Hwang, Dae-Kue ; Sung, Shi-Joon ; Heo, Young-Woo

Citation: Journal of Nanoscience and Nanotechnology, v.15, no.10, pp.7845 - 7847

Author Keywords: Dye-Sensitized Solar Cells ; TiO2 Nanotube ; TiCl4 Treatment

Keywords: ARRAYS ; Cell Efficiency ; Charge Exchanges ; Charge Transfer ; Dye-Sensitized Solar Cells ; Efficiency ; Electrolytes ; ENHANCemENT ; Fabrication ; LAYER ; Low Temperatures ; NANOTUBES ; Post Treatment ; Rough Surfaces ; Solar Cells ; STAINLESS-STEEL SUBSTRATE ; TemPERATURE ; TiCl4 Treatment ; TiO ; TiO2 Nanotube ; Titanium Dioxide ; Treatment Temperature ; Yarn

Abstract: We have studied the effect of TiCl4 post-treatment on the embedded-type TiO2 nanotubes (NT)-dye-sensitized solar cells (DSSCs). The TiO2 nanoparticles layer formed on TiO2 NTs surface by TiCl4 post-treatment showed different morphologies depending on TiCl4 treatment temperature. These different morphologies influenced the cell efficiency of TiO2 NT-DSSCs. The TiO2 NT treated with TiCl4 at 50°C exhibited a rougher surface than that treated at 70°C. The rough surface of the TiO2 NT improved the charge exchange between the dye and electrolyte. The TiO2 NT treated with TiCl4 at 50°C showed better fill factor and cell efficiency than that treated at 70°C. The TiCl4 post-treatment of TiO2 NT was effective at conditions of low temperature and long times. The TiO2 NT-DSSCs with TiCl4 post-treatment at 50°C for 1.5 h showed an efficiency of 6.52%. Copyright © 2015 American Scientific Publishers All rights reserved.