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According to solardaily news, Solar rays are a plentiful, clean source of energy that is becoming increasingly important as the world works to shift away from power sources that contribute to global warming. But current methods of harvesting solar charges are expensive and inefficient – with a theoretical efficiency limit of 33 percent. New nanomaterials developed by researchers at the Advanced Science Research Center (ASRC) at The Graduate Center of The City University of New York (CUNY) could provide a pathway to more efficient and potentially affordable harvesting of solar energy. “We modified some of the molecules in commonly used industrial dyes to create self-assembling materials that facilitate a greater yield of harvestable electrons and extend the electrons’ excited-state lifetimes, giving us more time to collect them in a solar cell,” said Andrew Levine, lead author of the paper and a Ph.D. student at The Graduate Center.
The self-assembly process, Levine explained, causes the dye molecules to stack in a particular way. This stacking allows dyes that have absorbed solar photons to couple and share energy with – or “excite” – neighboring dyes. The electrons in these dyes then decouple so that they can be collected as harvestable solar energy. ——————–***——————–
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Location: The City University of New York
Date: Jan 26, 2019 @ 10:51
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