Controlled-Direction Growth of Planar InAsSb Nanowires on Si Substrates without Foreign Catalysts

Nano Letters
Wenna DuTao Yang

Abstract

We describe the controlled growth of planar InAsSb nanowires (NWs) on differently oriented Si substrates without any foreign catalysts. Interestingly, the planar InAsSb NWs grew along four criss-crossed ⟨110⟩ directions on an [100]-oriented substrate, two ⟨100⟩ directions plus four ⟨111⟩ directions on an [110]-oriented substrate, and six equivalent ⟨112⟩ directions on an [111]-oriented substrate, which correspond to the projections of ⟨111⟩ family crystal directions on the substrate planes. High-resolution transmission electron microscopy (HRTEM) reveals that the NWs experienced a transition from out-of-plane to in-plane growth at the early growth stage but still occurred on the {111} plane, which has the lowest surface energy among all the surfaces. Furthermore, the NWs exhibit a pure zinc-blende crystal structure without any defects. A growth model is presented to explain growth of the NWs. In addition, conductive atomic force microscopy shows that electrically rectifying p-n junctions form naturally between the planar InAsSb NWs and the p-type Si substrates. The results presented here could open up a new route way to fabricate highly integrated III-V nanodevices.

References

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Citations

Feb 2, 2019·Nanotechnology·Zhaofeng GaoHaibo Zeng
Apr 27, 2017·Nanotechnology·Alexander M WhiticarJessica Bolinsson
Mar 28, 2019·Nanotechnology·Dingding RenBjørn-Ove Fimland
Nov 21, 2019·Advanced Materials·Ying SunKunji Chen
Mar 4, 2020·Nanoscale Research Letters·X F HuX J Yang
Nov 20, 2020·Nanotechnology·Shaoteng WuJinmin Li
Sep 29, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Sanjun Yang, Qiming Liu

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