Microscopic Solar Cells

Solar technology always remained an area of attention for scientists and researchers all over the world. This is a mean of energy generation which is likely to replace all other sources of power in future. Some of the recent advancement by development of microscopic solar cells is considered as a breakthrough in solar technology. These solar cells are 200 times thinner than human hair. New creations of micro technologies need such type of power sources. It will be used in nanoscale gadgetry of future time.
It will be equally useful for civil and military uses. Lots of consumer devices are available in market, which need small power source for their small sized components. Big benefit will go to medical field. Modern in-body treatments use very light and thin elements to place them inside body of patient. These electrical components need micro level of electric power for their functioning to avoid any kind of hazardous effects to patient’s body. It will work for them also. In five to ten years it will be available in market with all kind of such devices.  
After the development of these micro cells, scientists also faced problem to power them. That was other big task for them at that time. But later on Charles Leiber and his fellow scientists provided solution for that also. They carried out their research work at their Harvard University and developed a silicone nanowire to convert sunlight to electric power. It is also ultra-small in size and almost invisible to human eye. One single nanowire would be having capacity to produce 200 picowatts of electricity for solar cells (One picowatt is equal to two-hundred billionths of a watt). You can say that what would this low amount of energy do? But people having knowledge about micro-technologies know that it is enough energy to empower ultra-low power electronics (especially being used in medical field). Requirements of single electronic device will be very low as compared to number of interconnected devices. For such type of arrangements it will be required to build an array of nanowires.
There are some sources and methods being used today also but these are very expensive, bigger in size and non-renewable. This new source is not only small in size but also renewable. This nanowire is made of silicone rather than any metal. It is having three layers in its construction. When sunlight strikes outer layer it generates electrons. They are transfused to second layer and then to inner layer. The process is somewhat like electrical batteries having + and – charges on them.