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1 2015

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TiO2 &enspNanorods Prepared from Anodic Aluminum Oxide Template and Their Applications in Dye-Sensitized Solar Cells

Nukunudompanich M., Chuangchote S., Wootthikanokkhan J., Suzuki Y.

International Letters of Chemistry, Physics and Astronomy

2015

Vol. 46

30--36

Anodic aluminum oxide (AAO) was used as a template coupled with liquid process for synthesis of TiO2&enspnanorods. Immersion setting (IS) was carried out to insert a TiO2&enspprecursor solution into AAO pore. With the calcination and NaOH treatment to remove AAO, SEM characterization revealed that TiO2&enspnanorods with diameter around 100-200 nm were successfully fabricated from AAO commercial templates. The synthesized nanorods mixed with commercial TiO2&enspnanoparticles (P25) with a mixing ratio of 5:95 (by mass) were used as an electrode in a dye-sensitized solar cell (DSSC), The photoelectrodes made with nanorods showed a better performance than the cells used of only pristine TiO2&enspnanoparticles. The results from current density-voltage (J-V) characteristics of DSSCs showed that short-circuit current density (JSC), open-circuit voltage (VOC), fill factor (FF), and power conversion efficiency (PCE) are 11.78 mA/cm2, 0.72 V, 0.55, and 4.68%, respectively. Due to the effects of one-dimensional (1-D) nanostructure, the electron expressway concept was achieved in this research.