The high current generated in cells under concd. sunlight causes a voltage drop on the front contact grid. This drop, proportional to the current intensity and combined with the non-linear current-voltage (I-V) characteristic of the diode, limits the cell efficiency in the mid- and high-concn. region. A simulation method capable of evaluating this kind of loss for general contact patterns and different concn. levels is therefore proposed. The simulated I-V curve can be employed for concn.-dependent pattern and coverage optimization.
Contact grid optimization methodology for front contact concentration solar cells
ANTONINI, Andrea;STEFANCICH, Marco;VINCENZI, Donato;MALAGU', Cesare;MARTINELLI, Giuliano
2003
Abstract
The high current generated in cells under concd. sunlight causes a voltage drop on the front contact grid. This drop, proportional to the current intensity and combined with the non-linear current-voltage (I-V) characteristic of the diode, limits the cell efficiency in the mid- and high-concn. region. A simulation method capable of evaluating this kind of loss for general contact patterns and different concn. levels is therefore proposed. The simulated I-V curve can be employed for concn.-dependent pattern and coverage optimization.File in questo prodotto:
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