Freestanding GaN Wafers by Hydride Vapor Phase Epitaxy Using Void-Assisted Separation Technology

Autor: Yuichi Oshima, Kazutoshi Watanabe, Tomoyoshi Mishima, Masatomo Shibata, Takehiro Yoshida, Takeshi Eri
Rok vydání: 2010
Předmět:
Zdroj: Technology of Gallium Nitride Crystal Growth ISBN: 9783642048289
DOI: 10.1007/978-3-642-04830-2_4
Popis: An outline is presented of the fabrication technique of freestanding GaN wafers by hydride vapor phase epitaxy using the void-assisted separation method and the properties of resulting crystals. A thick GaN layer of large area can be separated with excellent reproducibility from a base substrate by the application of thermal stress. This process is assisted by numerous voids formed near the interface between the thick GaN layer and the base substrate. By using this method, high-quality GaN wafers of large area with diameters of over 3 in. have been prepared.
Databáze: OpenAIRE