Crystal phase control in self-catalyzed InSb nanowires using basic growth parameter V/III ratio

被引：8

作者：

Anandan, Deepak ^{[1
]}

Nagarajan, Venkatesan ^{[1
]}

Kakkerla, Ramesh Kumar ^{[1
]}

Yu, Hung Wei ^{[1
]}

Ko, Hua Lun ^{[2
]}

Singh, Sankalp Kumar ^{[1
]}

Lee, Ching Ting ^{[4
]}

Chang, Edward Yi ^{[1
,2
,3
]}

机构：

[1] Natl Chiao Tung Univ, Dept Mat Sci & Engn, 1001 Univ Rd, Hsinchu 30010, Taiwan

[2] Natl Chiao Tung Univ, Int Coll Semicond Technol, 1001 Univ Rd, Hsinchu 30010, Taiwan

[3] Natl Chiao Tung Univ, Dept Elect Engn, 1001 Univ Rd, Hsinchu 30010, Taiwan

[4] Yuan Ze Univ, Dept Photon Engn, Taoyuan 320, Taiwan

来源：

JOURNAL OF CRYSTAL GROWTH | 2019年 / 522卷

关键词：

Nanomaterials; Semiconducting III-V materials; MOCVD; Infrared devices; Crystal structure; Antimonides; SURFACE-ENERGY; CONTACT-ANGLE; GAAS; MECHANISMS; INTERFACE; INP;

D O I：

10.1016/j.jcrysgro.2019.06.016

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

In this work, the influence of V/III ratio on self-catalyzed InSb nanowire (NW) crystal structure is investigated using metal organic chemical vapor deposition. The effective balance of V/III ratio determines the change of InSb NW crystal structure from zincblende to wurtzite. Particularly, as group-V molar flow varies from 6.4 x 10(-5) to 8.0 x 10(-5) mol/min, wurtzite segment length of InSb NW increases from 16 +/- 9 nm to 89 +/- 9 nm, whereas zincblende crystal phase is observed for other molar flows. We interpret the observed phase transition to a lower surface energy of In-Sb alloy droplet than pure In-droplet, which makes triple phase line nucleation energetically favorable. This study gives insight on single growth parameter (V/III ratio) change to the InSb NW crystal control, such a technique is essential to selectively tune the crystal phase of single NW for various applications.

引用

页码：30 / 36

页数：7

共 46 条

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