Journal
CHINESE SCIENCE BULLETIN
Volume 56, Issue 24, Pages 2649-2653Publisher
SCIENCE PRESS
DOI: 10.1007/s11434-011-4532-x
Keywords
flexible DSSC; TiO2 film; TTIP; UV treatment
Categories
Funding
- National High Technology Research and Development Program of China [2009AA03Z217]
- National Natural Science Foundation of China [50842027, 90922028]
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A TiO2 paste was prepared by mixing commercial TiO2 (P25), ethanol, distilled water and a small amount of Ti (IV) tetraisopropoxide (TTIP), following by a hydrothermal treatment. Before hydrothermal treatment, a stirring for 48 h can prevent cracking TiO2 films. TTIP significantly promote the chemical connection between TiO2 particles and its adherence to the substrate, the TTIP amount of 6 mol% is suitable. UV irradiation can remove some impurities and water from the TiO2 film with an optimal time of 2 h. Transmission electron microscopy, X-ray diffraction, scanning electron microscopy and photovoltaic tests are characterized and measured. Short-circuit current density, open-circuit voltage, fill factor and photoelectric conversion efficiencies for the fabricated flexible dye-sensitized solar cell are 7.20 mA cm(-2), 0.769 V, 0.686 and 3.84%, respectively, under irradiation with a simulated solar light of 100 mW cm(-2).
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