Berlin 2024 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 13: Poster I

HL 13.1: Poster

Montag, 18. März 2024, 15:00–18:00, Poster E

"A Comparative Analysis of Two Different Full-Wafer Photoluminescence Spectroscopy Mappers" — •Elias Kersting, Alexander Schauerte, Hans-Georg Babin, Andreas Wieck, and Arne Ludwig — Lehrstuhl für Angewandte Festkörperphysik, Ruhr-Universität Bochum, Deutschland

Photoluminescence spectroscopy (PL) is an indispensable method for investigating the optical properties of semiconductor heterostructures. Spectroscopy of a complete wafer is necessary to obtain important growth parameters of samples grown with a molecular beam epitaxy (MBE) system. We present two different approaches for the construction of a fully automated 3-inch PL spectroscopy Mapper. The first setup uses mirrors as optical components and a movable cryostat. In the second setup, the heavy cryostat is fixed and a movable, lightweight optical system of lenses is used instead. The advantages and disadvantages are discussed and measurements on local droplet etched GaAs quantum dots are compared.

Keywords: Photoluminescence spectroscopy; Heterostructures; Molecular beam epitaxy (MBE); Quantum Dots