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Solar-cell efficiency is the portion of energy in the form of sunlight that can be converted via photovoltaics into electricity by the solar cell. The efficiency of the solar cells used in a photovoltaic system , in combination with latitude and climate, determines the annual energy output of the system.
It was first calculated by William Shockley and Hans-Joachim Queisser at Shockley Semiconductor in 1961, giving a maximum efficiency of 30% at 1.1 eV. [1] The limit is one of the most fundamental to solar energy production with photovoltaic cells, and is one of the field's most important contributions. [2]
Thermodynamic efficiency limit is the absolute maximum theoretically possible conversion efficiency of sunlight to electricity. Its value is about 86%, which is the Chambadal-Novikov efficiency , an approximation related to the Carnot limit , based on the temperature of the photons emitted by the Sun's surface.
The current world record for solar cell efficiency is 32.5 per cent – meaning nearly a third of solar radiation is converted into eletrical energy – which was achieved with a perovskite ...
Photovoltaic solar cell I-V curves where a line intersects the knee of the curves where the maximum power transfer point is located. Photovoltaic cells have a complex relationship between their operating environment and the power they produce.
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