Evolution of morphology and microstructure of GaAs/GaSb nanowire heterostructures

Formation of GaAs/GaSb Core-Shell Heterostructured Nanowires Grown by Molecular-Beam Epitaxy

In this paper, we demonstrated the growth of GaAs/GaSb core-shell heterostructured nanowires on GaAs substrates, with the assistance of Au catalysts by molecular-beam epitaxy. Time-evolution experiments were designed to study the formation of GaSb shells with different growth times. It was found that, by comparing the morphology of nanowires for various growth times, lateral growth was taking a...

Evolution of Wurtzite Structured GaAs Shells Around InAs Nanowire Cores

GaAs was radially deposited on InAs nanowires by metal-organic chemical vapor deposition and resultant nanowire heterostructures were characterized by detailed electron microscopy investigations. The GaAs shells have been grown in wurtzite structure, epitaxially on the wurtzite structured InAs nanowire cores. The fundamental reason of structural evolution in terms of material nucleation and int...

Synthesis, Morphological, and Electro-optical Characterizations of Metal/Semiconductor Nanowire Heterostructures

In this letter, we demonstrate the formation of unique Ga/GaAs/Si nanowire heterostructures, which were successfully implemented in nanoscale light-emitting devices with visible room temperature electroluminescence. Based on our recent approach for the integration of InAs/Si heterostructures into Si nanowires by ion implantation and flash lamp annealing, we developed a routine that has proven t...

Crystallographically driven Au catalyst movement during growth of InAs/GaAs axial nanowire heterostructures

of InAs/GaAs axial nanowire heterostructures Mohanchand Paladugu, Jin Zou, Ya-Nan Guo, Xin Zhang, Hannah J. Joyce, Qiang Gao, H. Hoe Tan, C. Jagadish, and Yong Kim School of Engineering, The University of Queensland, St Lucia, Queensland 4072, Australia Centre for Microscopy and Microanalysis, The University of Queensland, St Lucia, Queensland 4072, Australia Department of Electronic Materials ...

Nature of heterointerfaces in GaAs/InAs and InAs/GaAs axial nanowire heterostructures