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HL: Fachverband Halbleiterphysik

HL 29: Poster II

HL 29.27: Poster

Dienstag, 18. März 2025, 18:00–20:00, P1

Plasma-Induced Defect Emission in Hexagonal Boron Nitride — •Felix Schaumburg, •David Plitt, Timo Wagner, Nicolas Wöhrl, Martin Geller, Günther Prinz, and Axel Lorke — Faculty of Physics, University of Duisburg-Essen and CENIDE, Germany

Hexagonal boron nitride (hBN) has been the subject of numerous research efforts in the last decade. Of particular interest is the creation of single emitters in hBN because of their easy integration, e.g. in van-der-Waals heterostructures, and their room temperature photon emission. Many methods to create single emitters in hBN are still under investigation. We present our approach to create single quantum emitters in hBN using a remote plasma with different plasma species. We have used argon, nitrogen, and oxygen plasmas and present statistics on the emitters, produced by the different gas species, and their optical properties. In particular, we examine the emission of the exfoliated flakes before the plasma processes without an annealing step to avoid creating emitters that are not caused by the plasma exposure. Our findings suggest that the purely physical argon plasma treatment is the most promising route for creating optically active single emitters in hBN by plasma exposure.

Keywords: Quantum Emitter; hBN; Defect; Plasma; 2D Materials