Here some links on how to make your own Solar PV Panels / Solar Cells.
1st process - using cuprous oxide -
http://www.scitoys.com/scitoys/scitoys/echem/echem2.html
2nd process - using Titanium dioxide -
http://www.solideas.com/solrcell/english.html
3rd process - in situ solar cell process
http://www.linux-host.org/energy/aflatcell.html
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