How does a solar cell work? Summary: Improving the efficiency of thermodynamic energy July 20, 2009 -- 03:06 GMT (20:06 PDT) Loading... Please wait. http://i.bnet.com/video/9n0716_Intersolar_PaulAliviatos.flv Topic: Emerging Tech Kick off your day with ZDNet's daily email newsletter. It's the freshest tech news and opinion, served hot. Get it.