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Using EtaOpt the detailed balance efficiency of the classic lattice matched InGaP/GaAs/Ge 3-junction cell and those of optimized band gap combinations for both monolithic and mechanical stacks are calculated under 500×AM1.5D illumination. The results are 48.7% (mono) and 59.2% (mech) for the classic and 59.6% (mono) and 60.3% (mech) for the optimized band gap structures. For these devices we calculated...
When thermophotovoltaic (TPV) systems are compared to classical PV systems, two main aspects are distinctly important. First, due to the small distance between the receiver cells and heat source, a high photon flux will be incident on the cell. Secondly, due to the relatively low temperature of the heat source compared to the sun, the emitted photons will have a high wavelength. These two differences...
At present renewable energy sources consist mainly of hydro power and wind energy, with the latter becoming increasingly important. However, the number of solar cells being produced yearly (in terms of watts produced by these solar cells under a standardized spectrum) has been growing consistently over the last 10 years, with growth rates between 25 and 70%/year; for 2005 solar cell production reached...
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