Here, we present a protocol for parametrizing a tight-binding excitonic Hamiltonian for calculating optical absorption spectra and optoelectronic properties of molecular materials from first-principles quantum chemical calculations.
Kocherzhenko, A. A., Shedge, S. V., Germaux, P. F., Heidarian, M., Isborn, C. M. Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids. J. Vis. Exp. (159), e60598, doi:10.3791/60598 (2020).