<http://schema.org/about>
"The US National Renewable Energy Laboratory (NREL) has created thin film solar panels that are very close to competing with their more traditional silicon-based cousins. \"The copper indium gallium diselenide (CIGS) thin-film solar cell"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/clean-technology/199-new-thin-film-solar-efficiency-record.html>