Study of the exciton relaxation and recombination processes of a heteromolecular interface fabricated by a molecular superlattice growth technique

► Detailed analyses of the exciton processes at a heteromolecular interface. ► The formation energy of STE is decreased at heteromolecular interface. ► CT excitons become the dominant channel due to heteromolecular interface below 50 K. ► The non-radiative activation energy of CT decreases with heteromolecular interface.