Flat-Top and Stacking-Fault-Free GaAs-Related Nanopillars Grown on Si Substrates

Figure 2

Cross-sectional schematic images of nanopillars explaining the fabrication process. (a) InAs/GaAs/GaP nanowires on Si(111); (b) GaAs and AlAs growth; (c) after removal of AlAs together with Au particles; (d) GaAs growth.