Solar CIGS reach 18.7 percent efficiency
Swiss scientists have broken an energy conversion efficiency record for flexible thin-film CIGS solar cells, Empa, the Swiss Federal Laboratories for Materials Science and Technology, announced last week.
In collaboration with the Swiss solar start-up Flisom, Empa has achieved an 18.7 percent efficiency for CIGS (copper indium gallium selenide) flexible solar cells, which the lab says was made possible by mounting them on a polymer substrate. This breaks Empa's record of 17.6 percent when mounting the CIGS on steel foil substrates, according to the Swiss lab.
Solar efficiency is the amount of electricity per square inch that … Read more