TAG: Hot electrons

Supercharging Solar

20081030_solar_power

For many decades, researchers have investigated various methods to double the power output of solar cells by making use of “hot electrons”. Recently researchers at Boston College have provided new experimental evidence that this theory will work. The team built solar cells that get a power boost from high-energy photons. This boost, the researchers say, is the result of extracting hot electrons which are normally wasted in typical solar cells. The results are a step forward for solar cells that break conventional efficiency limits. Because of the way ordinary solar cells work they can, in theory, convert at most about 35%… read more