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Proceedings Paper

Ultrafast hot-electron transfer in metallic VSe2/graphene van der Waals heterostructures (Conference Presentation)

Paper Abstract

Interlayer coupling in van der Waals heterostructures exhibits unique physical properties and presents a new pathway for diverse applications in materials science and photonics. Interestingly, photo-responsivity of graphene with semiconducting transition metal dichalcogenide (TMD) can be enhanced in the UV-visible range by interlayer charge/energy transfer. However, such an effect has been studied only for semiconducting materials. In this work, we will discuss ultrafast hot-electron transfer in atomically thin metallic-layer VSe2/graphene heterostructures investigated by time-resolved pump-probe spectroscopy. Our experimental finding extends the concepts of conventional two-dimensional heterostructures to metallic-layer and can provide a new degree of freedom for designing novel functionalized materials and devices.

Paper Details

Date Published: 10 March 2020
Proc. SPIE 11278, Ultrafast Phenomena and Nanophotonics XXIV, 1127804 (10 March 2020); doi: 10.1117/12.2544768
Show Author Affiliations
Tae Gwan Park, KAIST (Korea, Republic of)
Byong Ki Choi, The Univ. of Seoul (Korea, Republic of)
Junho Park, KAIST (Korea, Republic of)
Jungdae Kim, Univ. of Ulsan (Korea, Republic of)
Young Jun Chang, The Univ. of Seoul (Korea, Republic of)
Fabian Rotermund, KAIST (Korea, Republic of)

Published in SPIE Proceedings Vol. 11278:
Ultrafast Phenomena and Nanophotonics XXIV
Markus Betz; Abdulhakem Y. Elezzabi, Editor(s)

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