Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10707359 | Journal of Crystal Growth | 2011 | 4 Pages |
Abstract
For application in novel opto-electronic nanowire devices, Ga-assisted GaAs/InxGa1âxAs axial heterostructure nanowires grown on a (1Â 1Â 1)Si substrate at a high In/Ga flux ratio were investigated. The increased diameter of the InxGa1âxAs region of the nanowire was observed from a scanning electron microscopy image. The In composition of 0.01-0.02 of the InxGa1âxAs was shown by EDX point analysis. The In concentration of 0.62 of an In-Ga alloy droplet was estimated from the diameter ratio of the InxGa1âxAs/GaAs region. From these results, it was considered that the excess In was collected in the droplet, resulting in an increased nanowire diameter. The increased diameter of the InxGa1âxAs region was also discussed together with the results of thermodynamic calculation.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Jihyun Paek, Masahito Yamaguchi, Hiroshi Amano,