Thermophotovoltaic cells top 40 percent efficiency
Physics World
MAY 21, 2022
The first thermophotovoltaic cells with an efficiency of more than 40% – higher than any existing solid-state heat engine, and exceeding even the average efficiency of turbine-based power generation – have been fabricated by researchers at the Massachusetts Institute of Technology (MIT) and the US National Renewable Energy Laboratory (NREL). The cells, which are two-junction devices made from III-V semiconducting materials with electronic bandgaps between 1.0 and 1.4 eV, use back surface reflect
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