2005•Physica status solidi. C, Conferences and critical reviews/Physica status solidi. C, Current topics in solid state physicsRequires access

Bowing of GaN bulk crystals with mismatched epitaxial structures of (AlInGa)N

M. Sarzyński, M. Kryśko, R. Czernecki, G. Targowski, Krzysztof Krowicki, B. Łucznik, I. Grzegory, M. Leszczyński, S. Porowski

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Abstract

We measured the bowing of structures consisting of epitaxial layers on bulk GaN substrates. The bowing is a result of lattice mismatch between layers and substrate. The layers were grown by HVPE (Hydride Vapor Phase Epitaxy) and MOVPE (Metalorganic Vapor Phase Epitaxy) techniques. The substrates are produced using high-temperature, high pressure method. In the present paper, the results of bowing measurements are presented compared with theoretical calculations. Based on the results, critical radius of bowing is estimated. (© 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

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Key concepts: Bowing, Epitaxy, Metalorganic vapour phase epitaxy, Vapor phase, Materials science, Hydride, Lattice (music), Substrate (aquarium)