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Abstract Multicrystalline standard p‐type silicon solar cells, which undergo a potential induced degradation, are investigated by different methods to reveal the cause of the degradation. Microscopic local ohmic shunts are detected by electron‐beam‐induced current measurements, which correlate with the sodium distribution in the nitride layer close to the Si surface imaged by time‐of‐flight secondary ion mass spectroscopy. The results are compatible with a model of the formation of a charge double layer on or in the nitride, which inverts the emitter. (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Bauer et al. (Tue,) studied this question.
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