Japanese scientists have developed a sun-powered golden sandwich: an experimental solar panel that they claim could be up to 11 times more effective than most equipment on the
market so far. The new photovoltaic cell could harvest 85% of the energy of visible sunlight as it slams into a rooftop solar array. Right now, most such panels are rated at 15% efficient; some new versions claim to be able to exploit 20% of the light. Researchers at Hokkaido University report in the journal Nature Nanotechnology that their new source depends on a golden touch: they placed a film of semiconductor material just 30 nanometres, or 30 millionths of a millimetre thick, between two layers of gold film and gold nanoparticles a mere 100 nanometres thick.
Climate News Network 20th Sept 2018 read more »