Abstract
For perovskite solar cells (PSCs), the effect of ion vacancy motion on the short‐circuit current (Jsc) in the reverse and forward J–V scans is investigated. To reveal its mechanism, all the components of current (carrier current, ionic current, displacement current) at the short‐circuit working point are calculated and the action of mobile ion vacancy on them is explored. By adjusting the parameters determining the ion vacancy mobility μI, the effect of parameter μI on Jsc is discussed. The finding provides a great supplement for the theory of short‐circuit current.
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