Effect of nano-column properties on self-separation of thick GaN layers grown by HVPE.

Autor: Nikolaev, V., Golovatenko, A., Mynbaeva, M., Nikitina, I., Seredova, N., Pechnikov, A., Bougrov, V., Odnobludov, M.
Předmět:
Zdroj: Physica Status Solidi (C); Apr2014, Vol. 11 Issue 3/4, p502-504, 3p
Abstrakt: The implementation of control over self-separation of thick GaN flayers grown by Hydride Vapor-Phase Epitaxy (HVPE) on Metal-Organic Chemical Vapor Deposition (MOCVD)-grown templates with patterned nano-column interlayer is reported. Both numerical simulation and experimental data show that separation of thick HVPE layers is provided by non-uniform redistribution of the growth stress. It is shown that the geometrical parameters of the nano-column structure such as fill factor and shape of the columns are most critical for self-separation effect. By adjusting the nano-column pattern, successful self-separation of thick HVPE layers from 2-inch structured MOCVD GaN/sapphire substrate was demonstrated. (© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index