Abstract
AbstractCarrier recombination, one of the major loss mechanisms in solar cells, has been found to be quite sensitive to the charge character of the Shockley‐Read‐Hall recombination center. Varying either the capture cross sections of the carriers or the density of the recombination centers results in a substantial change of the open‐circuit voltage as well as the fill factor in a solar cell. Compared to a neutral center, the center which remains repulsive to the opposite carrier after capturing a first carrier is beneficial to the open‐circuit voltage, when maintaining a constant density of recombination centers, whereas the center which becomes attractive to the minority carrier is detrimental to the open‐circuit voltage.
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