Dresden 2017 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 64: Poster: Photovoltaics and Optics
HL 64.12: Poster
Mittwoch, 22. März 2017, 15:00–19:00, P1C
Optical Characterization of iron doped ZnO — •Sebastian Bauer1, Florian Huber1, Benjamin Neuschl1, Matthias Schreck2, and Klaus Thonke1 — 1Institute of Quantum Matter, Semiconductor Physics Group, University Ulm, Germany — 2Institute of Physics, University Augsburg, Germany
Typically Fe is deliberately incorporated into III-V- and II-VI-semiconductor materials for the realization of semi-insulating substrates which are needed for optoelectronic and electronic devices. However in ZnO iron on a Zn lattice site acts as a deep donor. Also the realization of ferromagnetic semiconductors for spintronics is a subject of interest.
In ZnO the influence of transition metals on magnetic, optical and electronic properties of the material are still subject to research. In this study we present results on the preparation of iron containing ZnO layers grown by chemical vapour deposition technique. Iron has been incorporated both during the growth of the sample itself and by ion implantation. Further optical and magneto-optical investigations on the photoluminescence band at 1.78 eV are presented. This band emerges for Fe3+ from the spin-forbidden electric-dipole transition from the excited state 4T1(G) to the ground state 6A1(S) transition. Additionally isotope and other effects leading to fine splittings are discussed.