A movie theater is seen closed due to the coronavirus pandemic on July 2, 2020, in Brea, Calif. The U.S. economy shrank at a record 32.9% rate in the second quarter as the pandemic cost tens of ...

Record one-sun conversion efficiencies of 32.5% and 32.8% (AM1.5g) were achieved for III–V//Si 2J solar cells based on mechanical stacking of 1.81 eV GaInP and 1.42 eV GaAs top cells ...