O. Breitenstein, J. Bauer, A. Lotnyk, J.-M. Wagner
a b s t r a c tThe non-ideal behavior of the dark current-voltage (I-V ) characteristics of typical silicon solar cells is characterized by (1) an unexpectedly large recombination current, often characterized by an ideality factor larger than 2, (2) an ohmic characteristic at low reverse bias, and (3) pre-breakdown at a reverse bias far below the expected breakdown voltage. Experimental evidence, especially from lock-in thermography results, shows that all these features are due to currents flowing locally in…
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