biostudies-literatureMyers ARChemical Sciences, Geosciences, and Biosciences DivisionNational Renewable Energy Laboratory8190-8198https://www.ebi.ac.uk/biostudies/studies/S-EPMC10958597biostudies-literatureUnknown18(11)Innovation in optoelectronic semiconductor devices is driven by a fundamental understanding of how to move charges and/or excitons (electron-hole pairs) in specified directions for doing useful work, e.g., for making fuels or electricity. The diverse and tunable electronic and optical properties of two-dimensional (2D) transition metal dichalcogenides (TMDCs) and one-dimensional (1D) semiconducting single-walled carbon nanotubes (s-SWCNTs) make them good quantum confined model systems for fundamental studies of charge and exciton transfer across heterointerfaces. Here we demonstrate a mixed-dimensionality 2D/1D/2D MoS₂/SWCNT/WSe₂ heterotrilayer that enables ultrafast photoinduced exciton dissociation, followed by charge diffusion and slow recombination. Importantly, tACS nanoUltrafast Charge Transfer Cascade in a Mixed-Dimensionality Nanoscale Trilayer.PMC10958597DE-AC36-08GO28308Hermosilla-Palacios MALi ZMyers ARBlackburn JLJohnson JCGish MKEarley JDfalseUltrafast Charge Transfer Cascade in a Mixed-Dimensionality Nanoscale Trilayer.Innovation in optoelectronic semiconductor devices is driven by a fundamental understanding of how to move charges and/or excitons (electron-hole pairs) in specified directions for doing useful work, e.g., for making fuels or electricity. The diverse and tunable electronic and optical properties of two-dimensional (2D) transition metal dichalcogenides (TMDCs) and one-dimensional (1D) semiconducting single-walled carbon nanotubes (s-SWCNTs) make them good quantum confined model systems for fundamental studies of charge and exciton transfer across heterointerfaces. Here we demonstrate a mixed-dimensionality 2D/1D/2D MoS₂/SWCNT/WSe₂ heterotrilayer that enables ultrafast photoinduced exciton dissociation, followed by charge diffusion and slow recombination. Importantly, t2024-01-01T00:00:00Z2024 Mar2025-04-22T12:55:18.889Z2025-04-06T00:29:10.349ZS-EPMC109585973846564110.1021/acsnano.3c12179