Claims for solar cell efficiency put to test at NREL
Monday, February 8, 2016 - 12:32
in Physics & Chemistry
The sheet of paper taped to the door of Keith Emery's office tells the story. On the paper is a simple fever chart showing the improvements made in increasing the efficiency of two dozen types of solar cells. Some of the lines marking record efficiencies date to the mid-1970s. Others start much more recently, with the advent of newer technologies.