Hybrid Frenkel-Wannier excitons facilitate ultrafast energy transfer at a 2D-organic interface.

ABSTRACT: Two-dimensional transition metal dichalcogenides and organic semiconductors have emerged as promising material platforms for optoelectronic devices. Combining the two is predicted to yield emergent properties while retaining the advantages of each. In organic semiconductors, the optoelectronic response is typically dominated by localized Frenkel-type excitons, whereas transition metal dichalcogenides host delocalized Wannier-type excitons. However, much less is known about the characteristics of excitons at hybrid interfaces between these materials, which determine the possible energy- and charge-transfer pathways. Here we identify a hybrid exciton at one such interface using ultrafast momentum microscopy and many-body perturbation theory. We show that this hybrid exciton, formed predomina

SUBMITTER: Bennecke W 

PROVIDER: S-EPMC12695656 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature