i see these things all over the internet on how to make 'home made solar panels' but all of them require you to buy the solar cells and nothing tells you how to make your own. So how can you make your own solar cells?
I don't have an idea but would surely refer you to a website where you would surely find information on solar cells and many more alternative energy questions.
Found this video demonstrating the process of making home made solar cells. I do not think this method would be very practical for an off the grid home system.
You okorder /... Do yourself a favor and invest on good DIY book that include Video, and save a lot of money and frustration. Good Luck!
