as for recyclying solar panels, it basically involves recycling used silicons cell aka solar cells. still a budding idea but big companies are looking into these sort of activities as it yields high cost effectiveness of the solar panel product, thus consumers could enjoy more affordable solar panels.
http://www1.eere.energy.gov/solar/panel_...
http://www.solarworld.de/solarmaterial/e...
http://www.treehugger.com/files/2008/05/...