The result was confirmed by the European Solar Test Installation (ESTI).
Researchers from Germany’s Helmholtz-Zentrum Berlin (HZB) and Humboldt-Universität in Germany claim to have achieved a world record power conversion efficiency for a tandem solar cell based on a top perovskite device and a bottom cell based on copper, indium, gallium and selenium (CIGS).
The result was confirmed by the European Solar Test Installation (ESTI).
“The physics underlying our current cell architecture indicates that 25.5% is only an initial milestone, as in-house testing of similar designs has already achieved efficiencies of up to 27.5%,” HZB researcher Farias Basulto told pv magazine, noting that the result was already included in the Solar Cell Efficiency Tables.
The previous world record of 25.17% was achieved by Tokyo City University in Japan in mid-May. This result was verified by Japan’s National Institute of Advanced Industrial Science and Technology (AIST).
