Fig. 3: Tracking the change of effective mobility under applied bias voltage.

Effective mobility (ÎĽeff) of a MAPbBr3 and b MAPbI3 perovskite single crystals, in the dark (ÎĽeff,dark) and under illumination (ÎĽeff,light). Red and black dashed lines represent estimated microscopic mobilities (ÎĽ0,dark and ÎĽ0,light), while red solid lines represent models of effective mobility (ÎĽeff,m).