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Berlin 2018 – scientific programme

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DS: Fachverband Dünne Schichten

DS 16: 2D materials: Graphene and BN (joint session HL/DS)

DS 16.7: Talk

Tuesday, March 13, 2018, 15:30–15:45, A 151

Quantum Light in 1D and 2D Curved Hexagonal Boron Nitride Systems — •Nathan Chejanovsky1,2, Youngwook Kim2, Andrea Zappe1, Benjamin Stuhlhofer2, Takashi Taniguchi3, Kenji Watanabe3, Durga Dasari1,2, Amit Finkler1, Jurgen H. Smet2, and Jörg Wrachtrup1,213rd Physics Institute, Universität Stuttgart, Pfafenwaldring 57, 70569, Stuttgart, Germany — 2Max Planck Institute for Solid State Research, Heisenbergstr. 1, 70569, Stuttgart, Germany — 3National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Japan

Low-dimensional wide bandgap semiconductors open a new playing field in quantum optics using sub-bandgap excitation. 2D hexagonal boron nitride (h-BN) has been reported to host single quantum emitters (QEs), linking QE density to perimeters. [1] We investigate a curvature and perimeter-abundant BN system - one-dimensional BN nanotubes (BNNTs).

I discuss our recent publication [2] demonstrating similarities between QEs in BNNT and h-BN for: Emission spectra, anti-bunching, SEM imagery, curvature effects, boron-oxide emission and sensitivity to commercial solvents.

These findings open possibilities for precision engineering of QEs, puts h-BN under a similar umbrella of transition metal dichalcogenides QEs and provides a model explaining QEs spatial localization and formation using electron and ion irradiation and chemical etching.

[1] Chejanovsky, N. et al. Nano letters 2016, 16, 7037-7045. [2] Chejanovsky, N. et al. Scientific reports 2017, 7, 14758 (1-14)

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