Synthesis and Dye-Sensitized Solar Cell Performance of Nanorods/Nanoparticles TiO2 from High Surface Area Nanosheet TiO2

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Abstract:

High surface area nanosheet TiO2 with mesoporous structure were synthesized by hydrothermal method at 130 °C for 12 h. The samples characterized by XRD, SEM, TEM, SAED, and BET surface area. The nanosheet structure was slightly curved and approximately 50–100 nm in width and several nanometers in thickness. The as-synthesized nanosheet TiO2 had average pore diameter about 3–4 nm. The BET surface area and pore volume of the sample were about 642 m2/g and 0.774 cm3/g, respectively. The nanosheet structure after calcinations were changed into nanorods/nanoparticles composite with anatase TiO2 structure at 300–500 °C (10–15 nm in rods diameter and about 5–10 nm in particles diameter). The solar energy conversion efficiency () of the cell using nanorods/nanoparticles TiO2 (from the nanosheet calcined at 450 °C for 2 h) with mesoporous structure was about 7.08% with Jsc of 16.35 mA/cm2, Voc of 0.703 V and ff of 0.627; while of the cell using P-25 reached 5.82% with Jsc of 12.74 mA/cm2, Voc of 0.704 V, and ff of 0.649.

Keywords: DYE-SENSITIZED SOLAR CELL; HIGH SURFACE AREA; MESOPOROUS; NANOSHEET; TIO2

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2006.612

Publication date: December 1, 2006

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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