Today I stumbled upon a web site made by a guy (he’s an astronomer) who did his own very cheap solar panel. He has a remote property in Arizona and there isn’t any power source, so he had to improvise it by himself.
solar cell
DIY: Home Made Solar Panels with Cells Bought from eBay
New World Record for Solar Cell Efficiency
From time to time the National Renewal Energy Lab (NREL) reminds us that the US used to be a leader in innovation. This time it’s in the area of solar thin film technology. The goal with solar thin film technology is to surpass the efficiency level of silicon solar cells.

Solar cell wind turbine
Our environmental crisis is certainly spurring on some amazing innovation in the field of renewable energy systems - such as this vertical axis wind turbine embedded with solar cells.

New Solar Cell can be Printed out of a Printer
Researchers at the New Jersey Institute of Technology have developed an inexpensive solar cell that can be painted or printed on flexible plastic sheets.