Length distributions of Au-catalyzed and In-catalyzed InAs nanowires

被引:26
|
作者
Dubrovskii, V. G. [1 ,2 ,3 ]
Sibirev, N. V. [1 ,3 ]
Berdnikov, Y. [1 ,3 ]
Gomes, U. P. [4 ,5 ]
Ercolani, D. [4 ,5 ]
Zannier, V. [4 ,5 ]
Sorba, L. [4 ,5 ]
机构
[1] St Petersburg Acad Univ, Khlopina 8-3, St Petersburg 194021, Russia
[2] RAS, Ioffe Phys Tech Inst, Politekhnicheskaya 26, St Petersburg 194021, Russia
[3] ITMO Univ, Kronverkskiy Pr 49, St Petersburg 197101, Russia
[4] CNR, NEST Scuola Normale Super, Piazza S Silvestro 12, I-56127 Pisa, Italy
[5] CNR, Ist Nanosci, Piazza S Silvestro 12, I-56127 Pisa, Italy
基金
俄罗斯基础研究基金会;
关键词
length distribution; Poissonian; self-catalyzed; Au-catalyzed; theoretical model; InAs nanowires; III-V NANOWIRES; SURFACE-DIFFUSION; BEAM EPITAXY; GOLD LAYER; GROWTH; SIZE; MECHANISM;
D O I
10.1088/0957-4484/27/37/375602
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
We present experimental data on the length distributions of InAs nanowires grown by chemical beam epitaxy with Au catalyst nanoparticles obtained by thermal dewetting of Au film, Au colloidal nanoparticles and In droplets. Poissonian length distributions are observed in the first case. Au colloidal nanoparticles produce broader and asymmetric length distributions of InAs nanowires. However, the distributions can be strongly narrowed by removing the high temperature annealing step. The length distributions for the In-catalyzed growth are instead very broad. We develop a generic model that is capable of describing the observed behaviors by accounting for both the incubation time for nanowire growth and secondary nucleation of In droplets. These results allow us to formulate some general recipes for obtaining more uniform length distributions of III-V nanowires.
引用
收藏
页数:9
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