With concerns about worldwide environmental security, global warming, and climate change due to emissions of CO2 from the burning of fossil fuels, it is desirable to have a wide range of energy technologies in a nation`s portfolio. Photovoltaics, or solar cells, have already proven themselves a viable option as a nonpolluting renewable energy source, as well as viable business that will grow stronger in the global economy of the 21st century. This text is ...
