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EnglishWe investigate the growth modes for GaN homoepitaxy. Several parameters have been taken into account: the growth rate, the metal/N ratio value and the substrate temperature. The observation of time variation of the RHEED diffraction pattern and the study of thick samples has permitted the determination of a phase diagram of the Ga surface coverage during GaN homoepitaxy as a function of III/V ratio and substrate temperature. Furthermore, we address the different GaN surface morphologies obtained in different regions of the phase diagram.
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http://hdl.handle.net/11584/5488| Titolo: | Molecular beam epitaxy of GaN: a phase diagram |
| Autori interni: | MULA, GUIDO |
| Data di pubblicazione: | 2001 |
| Rivista: | PHYSICA STATUS SOLIDI. A, APPLIED RESEARCH |
| Abstract: | We investigate the growth modes for GaN homoepitaxy. Several parameters have been taken into account: the growth rate, the metal/N ratio value and the substrate temperature. The observation of time variation of the RHEED diffraction pattern and the study of thick samples has permitted the determination of a phase diagram of the Ga surface coverage during GaN homoepitaxy as a function of III/V ratio and substrate temperature. Furthermore, we address the different GaN surface morphologies obtained in different regions of the phase diagram. |
| Handle: | http://hdl.handle.net/11584/5488 |
| Tipologia: | 1.1 Articolo in rivista |
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