Femtosecond transient absorption microscopy was applied to the elucidation of ultrafast dynamics in a lead iodide perovskite solar cell. Space- and time-resolved detection revealed that rapid deactivation with a time constant of 0.7 ps took place without long-living species in submicron grains with the (CH3NH3)PbI3 capping layer, while the long-living component was detected in other areas.
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Katayama et al. (2014) studied this question.
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