For the mass production of GaN-based electronic devices, growth of AlGaN/GaN heterostructures on substrates larger than 100mm in diameter is indispensable. In this study, we demonstrate the growth of 100-mm-diameter Al0.26Ga0.74N/GaN heterostructures on sapphire substrates by metalorganic vapor phase epitaxy (MOVPE). The obtained films have specular surfaces, good crystal quality and good uniformity of alloy composition across the entire 100-mm-diameter epitaxial wafer. The bowing value of the 100-mm-diameter epitaxial wafer on c-face sapphire substrates is about 40 μm. This bowing value seems to be preferable for electronic device fabrication processes. These epitaxial wafers show good electrical properties.
|ジャーナル||IEICE Transactions on Electronics|
|出版ステータス||Published - 2003 10|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering