Berlin 2018 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 23: 2D materials: Graphene and BN (joint session HL/DS)
HL 23.7: Vortrag
Dienstag, 13. März 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 Wrachtrup1,2 — 13rd 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)