Proceedings of 6th International Conference on Hybrid and Organic Photovoltaics (HOPV14)
Publication date: 1st March 2014
The demand of energy is increasing worldwide due to fast industrialization. Further, the depletion of conventional energy sources and emission of CO2 as a result of burning of fossil fuels has attracted scientists’ attention towards developing clean and cheap energy sources. Solar radiation is the most abundant and accessible source of renewable energy available on earth that provides 3x1024 J per year, which is around 104 times more energy than is currently consumed globally by mankind. To harness this freely available energy, solar cells are employed. One of the form of solar cell is known as dye sensitized solar celll (DSSC) invented by Michael Gra¨tzel and Brian O’Regan in 1991 [1,2]. The DSSC was the first solar cell that employed nano-sized components to enable high performance. The most frequently used configuration of the cell employs a film of nanocrystalline titanium dioxide particles on a transparent conducting oxide (TCO), which acts as electron collector. We have measured the outdoor performance of DSSC in Saudi Arabia for the first time and the results are now published [3].
In the present investigations a DSSC was fabricated and its performance was evaluated in the Jeddah weather condition using a solar tracking system. The DSSCs were mounted on the tracking system that was designed and build in our laboratory. It tracks the sun throughout two perpendicular axes. The South north axis tracks the sun constantly as it moves from East to West. The East-West axis tracks the altitude of the sun as it changes with seasons. Thus the solar radiation in continuously incident perpendicular on the cell to collect the maximum power input. The J-V curves of at various time of the day were measured as shown in the figure and the performance characteristics of the cell were calculated. It is concluded that the maximum current density is available for most of the day.
J-V carateristics of DSSC
1. B. O’Regan, M Graetzel, Nature 335,73 (1991) 2. M. Grätzel, Journal of Photochemistry and Photobiology A: Chemistry 164, 3 (2004) 3. M. Marszalek , F. D. Arendse , J-D Decoppet , S. S. Babkair , A. A. Ansari , S. S. Habib , M. Wang , S. M. Zakeeruddin and M. Grätzel Adv. Energy Mater, DOI: 10.1002/aenm.201301235 (2013)
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