Also called ReS₂, ReSe₂
Unusual among layered semiconductors because thinning it hardly changes anything: its layers are already electronically decoupled from each other in the bulk crystal. Its distorted structure also makes it strongly direction-dependent, conducting and absorbing light differently along different directions in the plane.
They are coordination polyhedra. Only complete ones are drawn.
Three layers of ReSe2. The crystal is triclinic: each layer slides along both in-plane directions against the one below, so c leans away from the layers in a direction set by neither a nor b. 6.39 Å between layers. Cell from Alcock and Kjekshus, Acta Chemica Scandinavica 19, 79 (1965); COD 1539529.
Readiness runs lab → prototype → pilot → deployed.
Short notes for specialists. Choose a lens in the header and yours comes first.
The low-symmetry triclinic cell and Re–Re bonding make computed band structures sensitive to stacking and to the k-path chosen, which is why direct/indirect assignments differ between studies. Anisotropic excitons need BSE calculations with the full in-plane dielectric tensor.
Find the b-axis (Re chains) by polarised Raman or from cleaved edges, which tend to run along the chains. The many Raman modes make orientation mapping straightforward once referenced.
Rhenium is among the rarest elements in Earth’s crust and is costly, which limits use to niche optoelectronic components.
The newest items tagged ReS2, ReSe2, from the news feed updated 5 Oct 2026.
Strain engineering is a powerful route for controlling the exciton dynamics in van der Waals (vdW) heterostructures (HSs). The interlayer energy transfer (ET) process is another key factor in controlling the photocarrier relaxation pathways in vdW HSs. In this work, we combine these two processes to achieve an 8-fold…
Interlayer sliding in low-symmetry van der Waals materials has emerged as a mechanism to generate out-of-plane electric polarization without conventional ionic displacements, yet its experimental manifestation in realistic multilayer flakes remains difficult to identify unambiguously. Here, we provide evidence that…
Strongly bound excitons dominate the optical response in many van der Waals semiconductors, yet distinguishing between the different microscopic processes governing exciton dissociation remains challenging. Using time- and angle-resolved photoemission spectroscopy (TR-ARPES), we independently track exciton and…
Interlayer excitons (IXs) in two-dimensional (2D) van der Waals heterostructures have attracted considerable attention due to their unique optical and electronic properties. Owing to the spatially indirect nature, the radiative emission efficiency highly sensitive to interlayer twist angles. Further considering that…
Chiral crystals exhibit useful handedness-dependent properties, including spin selectivity and circularly polarized light sensitivity, yet controlling which enantiomer forms during synthesis remains a central challenge. Existing approaches utilize molecules in solution to template crystal growth, which restricts…
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