No mask epitaxial lateral overgrowth of gallium nitride on sapphire
β Scribed by Wei Zhang; Qiuyan Hao; Caichi Liu; Yuchun Feng
- Book ID
- 116602087
- Publisher
- Elsevier Science
- Year
- 2008
- Tongue
- English
- Weight
- 912 KB
- Volume
- 456
- Category
- Article
- ISSN
- 0925-8388
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Epitaxial lateral overgrowth (ELO) GaN samples were successfully grown on masked sapphire (0 0 0 1) substrates using an in-situ carbonized photoresist (PR) mask by a metalorganic chemical vapor deposition (MOCVD) method. The PR masks for the ELO process were prepared using conventional lithography i
## Abstract Epitaxial lateral overgrowth (ELO) of lowβdislocationβdensity AlN layers on trenchβpatterned sapphire substrates is demonstrated for the first time. Sapphire (0001) substrates with trench patterns formed along two different directions, γ10$ 10 \bar 10 $0γ and γ11$ 11 \bar 20 $0γ, were u