We use ultrafast transient absorption microscopy to map the effect of structural disorder on the photophysical properties within a micrometer-sized crystal of methylammonium lead iodide (CH3NH3PbI3) perovskite. We reveal a spatial inhomogeneity of the structural and photophysical behavior on the submicrometer scale induced by a local distortion of the crystal lattice, which affects the electron hole correlation over the hundreds of nanometers length scale.
Lattice Distortions Drive Electron-Hole Correlation within Micrometer-Size Lead-Iodide Perovskite Crystals
Altamura Davide;Pogna Eva Arianna Aurelia;Giannini Cinzia;Cerullo Giulio;
2017
Abstract
We use ultrafast transient absorption microscopy to map the effect of structural disorder on the photophysical properties within a micrometer-sized crystal of methylammonium lead iodide (CH3NH3PbI3) perovskite. We reveal a spatial inhomogeneity of the structural and photophysical behavior on the submicrometer scale induced by a local distortion of the crystal lattice, which affects the electron hole correlation over the hundreds of nanometers length scale.File in questo prodotto:
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