Efficient Interlayer Exciton Transport in Two-Dimensional Metal-Halide Perovskites.

12 October 2020, Version 1
This content is a preprint and has not undergone peer review at the time of posting.


We present transient microscopy measurements of interlayer energy transport in (PEA)2PbI4 perovskite. We find efficient interlayer exciton transport (0.06 cm2/s), which translates into a diffusion length that exceeds 100 nm and a sub-ps timescale for energy transfer. While still slower than in-plane exciton transport (0.2 cm2/s), our results show that excitonic energy transport is considerably less anisotropic than charge-carrier transport for 2D perovskites.


2D perovskites
energy transfer
exciton diffusion characteristics


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