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Revealing Exciton Dissociation and Inhomogeneity in Metal Halide Perovskite Thin Films

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Abstract

We present multidimensional spectra of excitons in formamidinium-methylammonium lead triiodide perovskite films at low temperature. The spectra show inhomogeneous broadening and two distinct states, which we assign to free and defect-bound excitonic states.

© 2019 The Author(s)

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