Dye-Sensitized Solar Cell Using Copper and Nitrogen Co-doped Titania as Photoanode
International Journal of Sustainable and Green Energy
Volume 4, Issue 6, November 2015, Pages: 219-226
Received: Oct. 22, 2015;
Accepted: Nov. 2, 2015;
Published: Nov. 24, 2015
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Purnima Dashora, Department of Chemistry, PAHER University, Udaipur, (Raj.) India
Chetna Ameta, Department of Chemistry, PAHER University, Udaipur, (Raj.) India
Rakshit Ameta, Department of Chemistry, PAHER University, Udaipur, (Raj.) India
Suresh C. Ameta, Department of Chemistry, PAHER University, Udaipur, (Raj.) India
Energy crisis is a burning problem in the present scenario, as natural energy resources will be exhausted very soon, due to their rapid utilization. Solar cells have attracted the attention of researchers, as using these devices sunlight can be converted into electricity, which is freely available to us. DSSCs is one of the important and new type of solar cell, which deliver higher photoelectric conversion efficiency and low production cost by combining wide-band gap semiconductor electrode, dye as sensitizer, a counter electrode and redox electrolyte like iodide and triiodide ions between them. In the present work, a comparison is made for the efficiency of pure TiO2 and Cu/N co-doped TiO2 fabricated DSSCs. Pure TiO2 and Cu/N co-doped TiO2 were prepared through sol-gel process. These electrodes were also characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), fourier transform infrared (FTIR), transmission electron microscopy (TEM) and diffuse reflectance spectra (DRS) techniques to know about their morphology, band gap, particle size etc. The cell was prepared by coating of Cu/N‒TiO2 film on the conductive side of FTO glasses using Rhodamine B dye as sensitizer. Liquid electrolyte I‒/I3‒ redox couple and carbon (graphite) as counter electrode and light intensity 60 mWcm‒2 were used. The observations revealed that Cu/N doped electrode showed maximum conversion efficiency with an open circuit voltage (Voc) = 395.0 mV, short circuit current (isc) = 0.0339 mA, Vpp = 66.2 mV and ipp = 0.0209 mA with fill factor = 0.10 and the power conversion efficiency (η) = 0.0023%, which is higher than that of pure TiO2. The results showed that the doping of TiO2 by copper and nitrogen improved the efficiency of this solar cell 38 times more in compare to pure TiO2.
Suresh C. Ameta,
Dye-Sensitized Solar Cell Using Copper and Nitrogen Co-doped Titania as Photoanode, International Journal of Sustainable and Green Energy.
Vol. 4, No. 6,
2015, pp. 219-226.
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