ArticleScience advances2021
Deciphering asymmetric charge transfer at transition metal dichalcogenide-graphene interface by helicity-resolved ultrafast spectroscopy.
Article in Science advances, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 40 citations in OpenAlex.
- Tunable photofluorochromic switch driven by dynamic through-space conjugation.Nature communications · 2026Article
- Molten Salt Assisted Carbon Nitride Overcomes Inherent Photocatalytic Limitations: Unique Characteristics for High-Efficiency Light-Driven Energy Production.Small (Weinheim an der Bergstrasse, Germany) · 2026Review
- Tracking and controlling ultrafast charge and energy flow in graphene-semiconductor heterostructures.Innovation (Cambridge (Mass.)) · 2025Review
- Robust excitonic light emission in 2D tin halide perovskites by weak excited state polaronic effect.Nature communications · 2024Article
- Photoinduced dynamics during electronic transfer from narrow to wide bandgap layers in one-dimensional heterostructured materials.Nature communications · 2024Article
- Observation of ultrafast interfacial Meitner-Auger energy transfer in a Van der Waals heterostructure.Nature communications · 2023Article
- Enhanced Magnetism and Anomalous Hall Transport through Two-Dimensional Tungsten Disulfide Interfaces.Nanomaterials (Basel, Switzerland) · 2023Article
- Picosecond energy transfer in a transition metal dichalcogenide-graphene heterostructure revealed by transient Raman spectroscopy.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Transition metal dichalcogenide (TMD)/graphene (Gr) heterostructures constitute a key component for two-dimensional devices. The operation of TMD/Gr devices relies on interfacial charge/energy transfer processes, which remains unclear and challenging to unravel. Fortunately, the coupled spin and valley index in TMDs adds a new degree of freedom to the charges and, thus, another dimension to spectroscopy. Here, by helicity-resolved ultrafast spectroscopy, we find that photoexcitation in TMDs transfers to graphene by asynchronous charge transfer, with one type of charge transferring in the order of femtoseconds and the other in picoseconds. The rate correlates well with energy offset between TMD and graphene, regardless of compositions and charge species. Spin-polarized hole injection or long-lived polarized hole can be achieved with deliberately designed heterostructures. This study shows helicity-resolved ultrafast spectroscopy as a powerful and facile approach to reveal the fundamental and complex charge/spin dynamics in TMD-based heterostructures, paving the way toward valleytronic and optoelectronic applications.
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Registered trials
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