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The Aachen Graphene & 2D Materials Center exploits the unique properties of graphene, two-dimensional (2D) materials and 2D heterostructures for different applications in the fields of electronics, sensors and photonics. The center brings together the complementary expertise and facilities of Aachen’s world leading research groups in the area of material science, analytics, device design and manufacturing, and hence covers the entire value chain needed to bridge the gap from the basic science to applications.

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Interlayer transfer of valley polarization from excitons to free charge carriers in WSe2/MoSe2 heterobilayers

Scientists from RWTH Aachen, AMO GmbH, Forschungszentrum Julich and the University of Regensburg have shown that in twisted heterobilayers of WSe2 and MoSe2 there is a transfer of valley polarization from excitons in WSe2 to free carriers in MoSe2. This mechanism, which is strongly dependent on the twist angle, may allow the realization of opto-valleytronic …

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