12th grade essay on chemical bonds in our solar system. Well Researched! Solar cells today are mostly made of silicon, one of the most common elements on Earth. The crystalline silicon solar cell was one of the first types to be developed and it is still the most common type in use today. They do not pollute the atmosphere and they leave behind no harmful waste products. Photovoltaic cells work effectively even in cloudy weather …showed first 75 words of 1118 total…

…showed last 75 words of 1118 total…otovoltaic power plants can be put up easily and quickly, photovoltaic power plants are quite modular and can respond to sudden changes in solar input which occur when clouds pass by. However there are still some major problems with them. They still cost too much for mass use and are relatively inefficient with conversion efficiencies of 20% to 30%. With time, both of these problems will be solved through mass production and new technological advances in semiconductors.