The parameter J0, commonly used in solar cell modelling, has a deep physical meaning, which this paper intends to clarify. Upon
examination, J0 can be identified as the recombination current density in thermal equilibrium. In many cases the same
equilibrium parameter J0 can be used to describe carrier recombination under external illumination. Nevertheless, when carriers
flow from the point where they are generated towards a high recombination site the value of J0 that matters to solar cell...[Show more]
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