Abstract
Data are presented showing that the native oxide that can be formed on high Al composition AlxGa1-xAs (x≳0.7) confining layers commonly employed on AlxGa1-xAs-AlyGa 1-yAs-AlzGa1-zAs (y≳z) superlattices or quantum-well heterostructures serves as an effective mask against Si diffusion, and thus impurity-induced layer disordering. The high-quality native oxide is produced by the conversion of high-composition AlxGa1-xAs (x≳0.7) confining layers via H2O vapor oxidation (≳400°C) in N2 carrier gas.
Original language | English (US) |
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Pages (from-to) | 2031-2034 |
Number of pages | 4 |
Journal | Journal of Applied Physics |
Volume | 70 |
Issue number | 4 |
DOIs | |
State | Published - 1991 |
ASJC Scopus subject areas
- General Physics and Astronomy