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Crystal phase control in self-catalyzed InSb nanowires using basic growth parameter V/III ratio
- Source :
- Journal of Crystal Growth. 522:30-36
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- 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 × 10 −5 to 8.0 × 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.
- Subjects :
- 010302 applied physics
Phase transition
Materials science
Analytical chemistry
Nanowire
Nucleation
02 engineering and technology
Crystal structure
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
Inorganic Chemistry
Crystal
Phase (matter)
0103 physical sciences
Materials Chemistry
Metalorganic vapour phase epitaxy
0210 nano-technology
Wurtzite crystal structure
Subjects
Details
- ISSN :
- 00220248
- Volume :
- 522
- Database :
- OpenAIRE
- Journal :
- Journal of Crystal Growth
- Accession number :
- edsair.doi...........6d21ed97d254c90473bf379e318b6b5f