Excitons are realizations of a correlated many-body wavefunction, consisting of a Coulomb-bound electron-hole pair. They are the dominant excitations in organic and two-dimensional semiconductors. Thus, to exploit the full optoelectronic potential of these materials, a complete microscopic understanding of excitons is crucial. This ultimately relies on the access to the correlated exciton wavefunction, which has hardly been realized in experiments. In this presentation, I will introduce the concepts of time-resolved photoemission orbital tomography and how it can be used to directly probe correlated exciton wavefunctions.
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