Fig. 3: Facilitated diffusion length with in situ GDB bridging. | Nature Communications

Fig. 3: Facilitated diffusion length with in situ GDB bridging.

From: In-situ boundary bridging unlocks multi-grain-domain carrier diffusion in polycrystalline metal halide perovskites

Fig. 3

a Two-dimensional carrier diffusion images of perovskite thin films at time frames of 0, 50, 100, 150, 200, and 250 ns. The PL intensity is normalized to its peak value. b All converted Gaussian variance σ2x(t) as a function of delay time from 0 to 260 ns every 10 ns. c The summarized intra and outer diffusion coefficient for the perovskite films before and after CE-Cs and CE-Rb post-treated. d The TRPL decay of control, CE-Cs, and CE-Rb-based perovskite films. e Statistical distribution of PLQYs for three perovskite films, the perovskite films prepared on glass (3 samples for each condition and measure 2 points for every sample). The box represents values within the range of 25–75%, the dots represent the median and the line segment represents the value range within 1.5 times the interquartile range.

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