Regensburg 2019 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 35: HL Poster II

HL 35.24: Poster

Wednesday, April 3, 2019, 17:30–20:00, Poster E

Investigation of optical properties for Fe³⁺ in ZnO — •Martin Mangold¹, Raphael Müller¹, Florian Huber¹, Benjamin Neuschl¹, Ulrich Herr², and Klaus Thonke¹ — ¹Institute of Quantum Matter, Semiconductor Physics Group, University Ulm, Germany — ²Institute for Functional Nanosystems, University Ulm, Germany

Ferromagnetism in II-VI-semiconductors like ZnO, due to doping with transition metals, rose attention over the last years. A candidate for realization are iron impurities which can be incorporated in high concentrations. In this study high-quality crystalline wurtzite ZnO layers grown by a CVD-based method were used as a host crystal for the investigation of internal spin-forbidden electric-dipole transitions of Fe³⁺. Therefore iron was incorporated by a seed growth technique using iron(II) acetate. High-resolution, low-temperature Photoluminescence and magneto-optical photoluminescence investigations on the iron atom and its optical band at 1.78 eV are presented. This band emerges for a transition from the excited state ⁴T₁(G) to the ground state ⁶A₁(S).