Abstract
This article reviews the carrier recombination mechanisms which degrade crystalline solar cells as a result of exposure to light (photo-degradation) and in the case of satellite cells after exposure to energetic electrons in space. The role of impurities is considered and in particular contamination with iron and the formation of metastable boron-oxygen complexes. The application of high resolution (Laplace) deep level transient spectroscopy in the structural identification of the induced defects is discussed with a view to controlling their formation by defect engineering. (© 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
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