Researchers at the Idaho National Laboratory have designed a
lightweight, foldable solar panel design which they predict will
function at 80% efficiency (the best solar panel prototypes operate at
about 40%). The researchers’ secret is the implementation of
nanoantennas, which have the ability to absorb not only light, but heat
from the sun as well.

The sheet of solar panels is similar in size and weight to a sheet of
plastic wrap But like any breakthrough, this is still in the
theoretical stage, as researchers have only simulated the function of
the solar cells and design tweaks still need to be made.

Via Gizmodo via Idaho National Laboratory