blog posts U.S. team builds solar cell with 44.5% efficiency Jul 14, 2017 11:00 am by Compound SemiconductorIllinois in the News Share on Facebook Tweet Email Images Compound Semiconductor (July 13) Scientist at Illinois, colleagues prototype for a new solar cell that can capture nearly all energy in the solar spectrum, resulting in a 44.5 percent conversion efficiency. Share on Facebook Tweet Email