SOLAR TODAY‘s January/February issue launches the magazine’s first major redesign since its launch in 1987 with a free online digital edition.
Issue highlights include –
— American Solar Energy Society [ASES]
For solar to become a primary source of electricity, vast amounts of affordable storage will be needed. And today’s options for storing electricity just aren’t practical on a large enough scale.
Enter MIT chemist Daniel Nocera, who has mimicked the step in photosynthesis in which green plants split water into hydrogen and oxygen using sunlight and an inexpensive liquid catalyst. read article in Technology Review
Traditional photovoltaic solar cells use the sun’s energy to knock electrons away from the positive charges (holes) in doped silicon. In this manner, the two cannot recombine until the electrons have traveled the entirety of the circuit with an applied load. The University of Delaware have devised solar cells being far more efficient, as they could implement up to some six different material substrates to generate power from different parts of the solar spectrum. The solar light coming into the cell is concentrated 20 times and passes through a high-energy absorbing material (purple) to a reflective splitter that directs medium (green) and low (red) energy light to the other appropriate absorption materials.
Most don’t realize how much energy potential strikes the earth every day.
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above 3 from becauseaction network
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