scholarly journals Theory of MBE Growth of Nanowires on Reflecting Substrates

Nanomaterials ◽  
2022 ◽  
Vol 12 (2) ◽  
pp. 253
Author(s):  
Vladimir G. Dubrovskii
Keyword(s):  
Radial Growth ◽  
Molecular Beam ◽  
Intermediate Stage ◽  
Selective Area Growth ◽  
Mbe Growth ◽  
Group Iii ◽  
Selective Area ◽  
Area Growth ◽  
Shadowing Effect ◽  
Axial Growth

Selective area growth (SAG) of III-V nanowires (NWs) by molecular beam epitaxy (MBE) and related epitaxy techniques offer several advantages over growth on unpatterned substrates. Here, an analytic model for the total flux of group III atoms impinging NWs is presented, which accounts for specular re-emission from the mask surface and the shadowing effect in the absence of surface diffusion from the substrate. An expression is given for the shadowing length of NWs corresponding to the full shadowing of the mask. Axial and radial NW growths are considered in different stages, including the stage of purely axial growth, intermediate stage with radial growth, and asymptotic stage, where the NWs receive the maximum flux determined by the array pitch. The model provides good fits with the data obtained for different vapor–liquid–solid and catalyst-free III-V NWs.

scholarly journals Selective Area Growth and Structural Characterization of GaN Nanostructures on Si(111) Substrates

Crystals ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 366 ◽  
Author(s):  
Alexana Roshko ◽  
Matt Brubaker ◽  
Paul Blanchard ◽  
Todd Harvey ◽  
Kris Bertness
Keyword(s):  
Molecular Beam Epitaxy ◽  
Molecular Beam ◽  
Lattice Mismatch ◽  
Buffer Layers ◽  
Selective Area Growth ◽  
Gan Nanowires ◽  
Selective Area ◽  
Area Growth ◽  
Eutectic Formation

Selective area growth (SAG) of GaN nanowires and nanowalls on Si(111) substrates with AlN and GaN buffer layers grown by plasma-assisted molecular beam epitaxy was studied. For N-polar samples filling of SAG features increased with decreasing lattice mismatch between the SAG and buffer. Defects related to Al–Si eutectic formation were observed in all samples, irrespective of lattice mismatch and buffer layer polarity. Eutectic related defects in the Si surface caused voids in N-polar samples, but not in metal-polar samples. Likewise, inversion domains were present in N-polar, but not metal-polar samples. The morphology of Ga-polar GaN SAG on nitride buffered Si(111) was similar to that of homoepitaxial GaN SAG.

Cost-effective selective-area growth of GaN-based nanocolumns on silicon substrates by molecular-beam epitaxy

2019 ◽  
Vol 514 ◽  
pp. 124-129
Author(s):  
Yukun Zhao ◽  
Wenxian Yang ◽  
Shulong Lu ◽  
Yuanyuan Wu ◽  
Xin Zhang ◽  
...  
Keyword(s):  
Molecular Beam Epitaxy ◽  
Molecular Beam ◽  
Cost Effective ◽  
Silicon Substrates ◽  
Selective Area Growth ◽  
Selective Area ◽  
Area Growth

Polarity-Controlled GaN/AlN Nucleation Layers for Selective-Area Growth of GaN Nanowire Arrays on Si(111) Substrates by Molecular Beam Epitaxy

2015 ◽  
Vol 16 (2) ◽  
pp. 596-604 ◽  
Author(s):  
Matt D. Brubaker ◽  
Shannon M. Duff ◽  
Todd E. Harvey ◽  
Paul T. Blanchard ◽  
Alexana Roshko ◽  
...  
Keyword(s):  
Molecular Beam Epitaxy ◽  
Molecular Beam ◽  
Nanowire Arrays ◽  
Selective Area Growth ◽  
Selective Area ◽  
Area Growth ◽  
Gan Nanowire

Selective-area growth of GaN nanowires on SiO2-masked Si (111) substrates by molecular beam epitaxy

2016 ◽  
Vol 119 (22) ◽  
pp. 224305 ◽  
Author(s):  
J. E. Kruse ◽  
L. Lymperakis ◽  
S. Eftychis ◽  
A. Adikimenakis ◽  
G. Doundoulakis ◽  
...  
Keyword(s):  
Molecular Beam Epitaxy ◽  
Molecular Beam ◽  
Selective Area Growth ◽  
Gan Nanowires ◽  
Selective Area ◽  
Area Growth

Selective-area growth of InAs nanowire arrays on Si3N4/Si(111) by molecular beam epitaxy

2017 ◽  
Author(s):  
K. Zhang ◽  
V. Ray ◽  
P. Herrera-Fierro ◽  
J. R. Sink ◽  
F. Toor ◽  
...  
Keyword(s):  
Molecular Beam Epitaxy ◽  
Molecular Beam ◽  
Nanowire Arrays ◽  
Selective Area Growth ◽  
Selective Area ◽  
Area Growth

Formation of GaN nanopillars by selective area growth using ammonia gas source molecular beam epitaxy

2002 ◽  
Vol 243 (1) ◽  
pp. 129-133 ◽  
Author(s):  
Koji Kawasaki ◽  
Ikuo Nakamatsu ◽  
Hideki Hirayama ◽  
Kazuo Tsutsui ◽  
Yoshinobu Aoyagi
Keyword(s):  
Molecular Beam Epitaxy ◽  
Molecular Beam ◽  
Selective Area Growth ◽  
Ammonia Gas ◽  
Gas Source ◽  
Selective Area ◽  
Area Growth
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