Trade-Off in Fire-Retardant Solar Cell Materials and Environmental Issues

In recent years, several types of solar cells, such as polycrystalline silicon, compound semiconductor and organic thin films, have been and grown and developed as one of the promising renewable energy devices for low cost and safety compared with nuclear power generation. They were composed from many components and their materials generally. As for Dye Sensitized Solar Cell (DSSC), which may be high efficiency and easy to assemble but not be expensive so much, not only inorganic titanium oxide and organic or metal complex dyes but also organic solvents as electrolyte. Furthermore, a condensing lens made of plastic are also used to improve power generating efficiency.