For humans, especially the scientists, of course, like tit for tat. In the midst of the energy crisis, when the effects of global warming are increasingly alarming, if thought scientists were directed to consider the utilization of solar energy was incredible. Just imagine, the light energy of the sun to the earth in an interval of one hour is equal to the energy consumed by human beings around the world in less than one year. To meet the world's energy needs sunlight is certainly shoots new hope will become a new field of research scientists. Solar cells, as one of the producers of electricity, when compared with other power producer such as petroleum and coal, gas karbondioksidanya spending very little. It also does not require other fuels, water cooler not necessary, do not produce noise pollution like any other power-producing machines, how to get the energy source is so easy, cheap and easy to make. From some of these advantages, solar cells could be placed anywhere, from the urban to the home page in the vast desert.
Along with the many studies on solar cells, the more types of solar cells with a characteristic popping and different efficiencies. There are types of solar cells that use silicon as the semiconductor crystals, there is also a solar cell HIT (Heterojunction with Intrinstic Thin-Layer), the type of CIGS (composed of copper, indium, gallium and serenium), and others. Of the many types of solar cells, the most caught my attention is the kind of Dye-sensitized Solar cells (solar cells use dye).
In comparison to other types of solar cells, one type of which is classified as the most inexpensive ingredients, are also the easiest to produce. In scientific, one type of solar cell that utilizes titania dioxide as a semiconductor compound that plays an important role in the changing light energy into electrical energy. And molecules that are used to absorb the light energy is dye. In general, all types of dyes can be used to absorb solar energy, but of course each dye has a different ability to absorb the sun's energy. In many studies, the dyes commonly used type of dye Ruthenium, florescein, eosin Y, and black dye. Coupling this type of solar cell is very easy to make a simple circuit takes only two small pieces of glass that one surface can conduct electricity, usually using a thin glass that has been coated with ITO (Indium Tin Oxide). One of the glass is coated with titania dioxide fluid that has been mixed with HNO3, ethanol and water to some degree. Glass coated with a process called dip coating. Then the dye has also been dissolved superimposed onto the glass surface that has been coated titania dioxide that has been heated for 30 minutes at 500 degrees. Once completed then dried for some time, while in the other glass surface, the coating process uses a special tool, platinum coated on the surface of the function is to serve as electrodes. The last process before coupling is the manufacture of solar cells elektrolite solution. As elektrolite used is Iodine. Once complete, the solar cells will be strung with ease, simply by attaching each glass surface is coated platinum dye and then dipped into elektrolite. Using negative positive wire connected to the circuit ammeters solar cells as experimental tools has been completed. So simple right.
If the light had been subjected to series certainly will move the needle on ammeters, it denotes a series of solar cells that have been made can result in an electric current. To demonstrate the quality of the solar cells, as is seen from the general reference efficiency while generating electricity.
Currently, the highest efficiency solar cells using a type of dye that Japanese scientists announced publicly only around 11% of the black dye as a color substance. For the future of solar cell research in general and the type of dye-sensitized solar cells will certainly continue to the attention of scientists worldwide.
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