ScienceDaily: Consumer Electronics News |
| Magnetic fields make the excitons go 'round: New way to improve efficiency of solar cells Posted: 21 Sep 2014 11:51 AM PDT A major limitation in the performance of solar cells happens within the photovoltaic material itself: When photons strike the molecules of a solar cell, they transfer their energy, producing quasi-particles called excitons -- an energized state of molecules. That energized state can hop from one molecule to the next until it's transferred to electrons in a wire, which can light up a bulb or turn a motor. |
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