Scientists keep on pushing the efficiency of solar panels higher and higher, and there's a new record to report: a new solar cell has hit 39.5 percent efficiency under the standard 1-sun global illumination conditions.
, and there's a new record to report: a new solar cell has hit 39.5 percent efficiency under the standard 1-sun global illumination conditions.That 1-sun marker is simply a standardized way of measuring a fixed amount of sunlight, and almost 40 percent of that radiation can now be converted into electricity.There are more types of solar cells around than you might have realized.
Further efficiency gains were made through the use of so-called 'quantum well' technologies. The physics behind them is quite complex, but the general idea is that the materials are carefully chosen and optimized, and made as thin as possible. This affects theIn this case, the three junctions are made up of gallium indium phosphide , gallium arsenide with some extra quantum well efficiencies added, and gallium indium arsenide .
Some of the improvements added in this latest cell include an increase in the amount of light absorbed without any corresponding voltage loss. Several other technical tweaks were also made to minimize limitations.from more intense solar radiation. While it takes time for technologies to make their way from the lab into actual products, the potential improvements are exciting.
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