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DS: Fachverband Dünne Schichten

DS 6: Thin Film Properties I

DS 6.2: Talk

Tuesday, March 19, 2024, 10:00–10:15, A 060

Molecule adsorption at wz-Sc(x)Ga(1-x)N surfaces investigated by photo electron spectroscopy — •Fabian Ullmann^1,2, Abdul Qadir Shahbaz^1,2, and Stefan Krischok^1,2 — ¹TU Ilmenau, Ehrenbergstraße 29, 98693 Ilmenau — ²Zentrum für Mikro- und Nanotechnologie, Gustav-Kirchhoff-Straße 7, 98693 Ilmenau

ScGaN can occur in various crystal orientations. The most important are wurtzite and rock salt formation. Depending on the scandium concentration, a phase transition between these orientations can be found. Wz-ScGaN surfaces with different scandium concentrations were grown by molecular beam epitaxy (MBE) to investigate the near-surface electronic structure. Furthermore, in-vacuo gas interactions (hydrogen, oxygen and water molecules) were analyzed by X-ray (XPS) and ultraviolet photoelectron spectroscopy (UPS).

Keywords: ScGaN; UPS; Scandium; Gallium; MBE