Fabrication of high efficient dye sensitized solar cell using eosin blue sensitizer

Abstract

For past several decades research in the field of photovoltaic has progressed from first generation solar cell to third generation solar cell. The dominance of solid state device which converts photons to electrons is a new challenge in technologies. In this work, a high efficient Dye Sensitized Solar Cell (DSSC) is fabricated. DSSC is easy to fabricate solar cell among the conventional pn-junction photo voltaic solar cells and even it is eco-friendly. A typical DSSC suffers from semiconductor liquid junctions and therefore concerns of electrolyte volatility and breakdown persists. By optimizing the sintering time, temperature, proper choosing of different types of sensitizer/dyes and the electrolyte, improves the efficiency of DSSC. It focuses towards developing DSSC on a small scale with the glass plates as electrodes coated with Titanium Oxide (TiO2) and graphite. The plates are conducting which are coated with Fluorine doped Tin Oxide (FTO). To enhance the absorption power of the glass plates Eosin blue is chosen as a dye. These electrodes are placed in an electrolyte made up of Lithium Iodide (LiI) and Iodine (I). The electrical conduction mechanism of the fabricated DSSC is studied at 50 lux and also tested with cascaded series cell connection.