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O: Fachverband Oberflächenphysik
O 31: Poster Session - Metal substrates: Structure, Epitaxy and Growth
O 31.2: Poster
Montag, 16. März 2020, 18:15–20:00, P1C
Production and transfer of h-BN monolayers: Exploratory study — •Marco Thaler, Tobias Bonczyk, and Erminald Bertel — Physikalische Chemie, Universität Innsbruck, Österreich
Hexagonal Boron Nitride (h-BN) monolayers belong to the rapidly growing family of two-dimensional materials. h-BN is intensely studied, on the one hand as a template for graphene growth, on the other hand as a dielectric barrier in graphene-based electronic and spintronic devices. In electro-catalysis, h-BN can serve as support for active clusters, but is active also by itself1,2. Recently, h-BN monolayers were found to host defects acting as single-photon sources with excellent spectral properties3. In view of these diverse applications, an easy, clean, and reproducible procedure for h-BN synthesis and transfer is highly desirable. We present a simple, load-lock equipped UHV chamber allowing the preparation of Pt foils as recyclable templates and the deposition of h-BN monolayers. The morphology and cleanliness of Pt templates after various pretreatments is studied by AFM and XPS. h-BN deposition is monitored by XPS and different transfer protocols for the monolayers to metallic or dielectric substrates are evaluated.
1 Elumalai, G. et al., Phys. Chem. Chem. Phys. 16, 13755(2014).
2 Lyalin, A. et al., The Chemical Record 16, 2324(2016).
3 Li, C. et al., Nanophotonics 8, 2049 (2019).