New world record efficiency for Cu(In,Ga)Se2 thin-film solar cells beyond 20%

In this contribution, we present a new certified world record efficiency of 20.1 and 20.3% for Cu(In,Ga)Se-2 thin-film solar cells. We analyse the characteristics of solar cells on such a performance level and demonstrate a high degree of reproducibility. Copyright (C) 2011 John Wiley & Sons, Ltd.