Selective-area growth of heavily n–doped GaAs nanostubs on Si(001) by molecular beam epitaxy
Selective-area growth of heavily n–doped GaAs nanostubs on Si(001) by molecular beam epitaxy
复制标题
通过分子束外延在 Si(001) 上选择性区域生长重 n 掺杂 GaAs 纳米棒
DOI:
10.1063/1.4947436
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发表时间:
2016
影响因子:
4
通讯作者:
J. Woo
中科院分区:
文献类型:
--
作者:
Yoon Jung Chang;P. Simmonds;B. Beekley;M. Goorsky;J. Woo
Using an aspect ratio trapping technique, we demonstrate molecular beam epitaxy of GaAs nanostubs on Si(001) substrates. Nanoholes in a SiO2 mask act as a template for GaAs-on-Si selective-area growth (SAG) of nanostubs 120 nm tall and ≤100 nm in diameter. We investigate the influence of growth parameters including substrate temperature and growth rate on SAG. Optimizing these parameters results in complete selectivity with GaAs growth only on the exposed Si(001). Due to the confined-geometry, strain and defects in the GaAs nanostubs are restricted in lateral dimensions, and surface energy is further minimized. We assess the electrical properties of the selectively grown GaAs nanostubs by fabricating heterogeneous p+–Si/n+–GaAs p–n diodes.
影响因子:
3.7
作者:
Cirlin, G. E.;Dubrovskii, V. G.;Zeze, Dagou
通讯作者:
Zeze, Dagou