Journal
APPLIED PHYSICS LETTERS
Volume 84, Issue 19, Pages 3735-3737Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1737071
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The radiative recombination limit of photovoltaic power conversion under one sun terrestrial illumination is calculated for solar cells with lateral fluctuations of the band-gap energy. A simple analytical model quantifies the fluctuations by the standard deviation sigma(Eg) from the mean band gap. The calculated maximum efficiency decreases by 1.7% (absolute) for sigma(Eg)=50 meV and by 6.1% for sigma(Eg)=100 meV with respect to a uniform band gap. (C) 2004 American Institute of Physics.
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