IntroductionMost people in our modern society are starting to realize that fossil fuels are becoming rarer and are harming our planet, this creates the need for a more sustainable form of energy. Solar energy is one of them and it is becoming more and more important and hopefully will soon replace this obsolete technology. There are several solar cell technologies; a dye-sensitized solar cell is one of them. In 1972, the first dye-sensitized solar cell was demonstrated, and it appeared that illuminated organic dyes could generate electricity on the oxide electrodes. At that time, dye-sensitized solar cells were unstable and their efficiency was low. Over the years this technology has improved significantly and can compete with other solar cells thanks to its high price/power ratio. Dye-sensitized solar cells use the dye to absorb light, the photons hit the dye molecules which excite the electrons, these electrons flow into the titanium dioxide. Through the electrode they flow through an external circuit and return to the dye-sensitized solar cells. When the electrons have reached the other electrode they are reintroduced into the cell and transported to the dye molecules via an electrolyte solution. IndexIntroduction 1Requirements for our solar cell. 3Design possibilities for our solar cell 4Requirements for our solar cell.The main requirement was to make an economical solar cell, we wanted our solar cell to be economical for several reasons. The most important reason of course was our budget, this may seem like a disadvantage for us, but we are not the only ones who have this problem. Solar panel costs are currently too high for most people ((and most of the time the panels can't even... half paper....... Liquid electrolytes are typically made up of an e additives dissolved in a liquid solvent. We used the I-/I3- redox couple, this is one of the best alternatives and relatively easy to obtain. It combines high overall conversion efficiency and, at the same time, good long-term stability [17] Bibliography Ch, David L., ler and MIT News Office. “Flexible, lightweight solar cells could provide new opportunities – MIT News Office. Accessed November 24, 2013. http://web.mit.edu/newsoffice/ 2012/hybrid-flexible-light-solar-cells-1221.html.“Dye-sensitized solar cell.” Wikipedia, the free encyclopedia, November 24, 2013. http://en.wikipedia.org/ w/index.php ?title=Dye-sensitized_solar_cell&oldid=582656333.Grätzel, Michael "Dye-sensitized solar cells Journal of Photochemistry and Photobiology C: Photochemistry Reviews 4, no. 2 (2003): 145–153.