Regensburg 2025 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 29: Poster II

HL 29.42: Poster

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

Emission properties of electron irradiated hBN — •Annkathrin Köhler, Jan Böhmer, Christian T. Plass, and Carsten Ronning — Friedrich Schiller Universität, Jena, Deutschland

Defect centers in solid state materials have emerged as promising candidates for quantum emitters. In particular, hexagonal boron nitride (hBN) has attracted significant attention due to its ability to host single-photon emitters (SPEs) at room temperature. Here, we systematically examined the luminescence properties of exfoliated hBN flakes as well as hBN nano-powders dispersed in various solutions and drop-casted onto a substrate. The effects of local electron irradiation and thermal annealing on the hBN samples were analyzed, providing insights into the conditions necessary for tuning their emission characteristics. Photoluminescence (PL) spectra were recorded using a micro-PL setup to compare the spectral distribution of the emission under different treatments. To further understand the quantum nature of the emitters, we conducted second-order correlation measurements as a function of the preparation parameters.

Keywords: hexagonal boron nitride (hBN); electron irradiation; single-photon emitter