Journal
JOURNAL OF CRYSTAL GROWTH
Volume 380, Issue -, Pages 256-260Publisher
ELSEVIER
DOI: 10.1016/j.jcrysgro.2013.06.024
Keywords
Nitrogen incorporation; Chemical beans epitaxy; Dilute nitrides; AlGaNAs; Solar cells
Funding
- NSERC Strategic Project Grant Program
- FQRNT
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The N incorporation is studied in AlGaNAs with low Al content grown by chemical beam epitaxy at low temperature using dimethylhydrazine as the N precursor. The incorporation efficiency is significantly enhanced by introducing a relatively low Al concentration. The relation between the N incorporation and NI(N+As) flow ratio for Al concentrations of 0-15% is presented. The highest N incorporation and the best AlGaNAs crystal quality are obtained between 400 degrees C and 440 degrees C, where the growth mode starts to change from 2D to 3D. The activation energies for N incorporation in both the 2D and 3D growth mode regions are extracted. (C) 2013 Elsevier B.V. All rights reserved,
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