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Fabrication of radial superlattices based on different hybrid materials

2008; Wiley; Volume: 5; Issue: 9 Linguagem: Inglês

10.1002/pssc.200779293

1862-6351

Christoph Deneke, Joachim Schumann, R Engelhard, Jürgen Thomas, Wilfried Sigle, Ute Zschieschang, Hagen Klauk, Andrey Chuvilin, Oliver G. Schmidt,

Adhesion, Friction, and Surface Interactions

Abstract The fabrication of radial superlattices is demonstrated for three different hybrid material systems. Inherently strained pseudomorphic InGaAs/Fe 3 Si bilayers are rolled‐up to produce radial semiconductor/magnetic heterostructures. Apart from this epitaxially based material system, radial InAlGaAs/GaAs/Cr superlattices are investigated as an example for periodic semiconductor/metallic multilayers. Finally, rolled‐up InGaAs/GaAs/1‐hexadecanethiol layers are studied as a new class of semiconductor/organic short‐period superlattices. The radial superlattices are examined structurally, and particular attention is paid to the interfaces of the periodic hybrid heterostructures. These investigations reveal that, except for the semiconductor/organic hybrid material system, always a new interface layer forms, modifying the initial rolled‐up layer system. The study demonstrates the potential to fabricate periodic layer systems from pure single‐crystalline material, single‐crystalline/poly‐crystalline material as well as single‐crystalline/non‐crystalline material, which cannot be realized by any planar growth techniques. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)