TY - JOUR
T1 - Crystal phase control in self-catalyzed InSb nanowires using basic growth parameter V/III ratio
AU - Anandan, Deepak
AU - Nagarajan, Venkatesan
AU - Kakkerla, Ramesh Kumar
AU - Yu, Hung Wei
AU - Ko, Hua Lun
AU - Singh, Sankalp Kumar
AU - Lee, Ching Ting
AU - Chang, Edward Yi
N1 - Funding Information:
This work was financially supported by the “Center for the Semiconductor Technology Research” from The Featured Areas Research Center Program within the framework of the Higher Education Sprout Project by the Ministry of Education (MOE) in Taiwan. Also supported in part by the Ministry of Science and Technology , Taiwan, under Grant MOST-108-3017-F-009-003 .
Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2019/9/15
Y1 - 2019/9/15
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85067242843&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85067242843&partnerID=8YFLogxK
U2 - 10.1016/j.jcrysgro.2019.06.016
DO - 10.1016/j.jcrysgro.2019.06.016
M3 - Article
AN - SCOPUS:85067242843
SN - 0022-0248
VL - 522
SP - 30
EP - 36
JO - Journal of Crystal Growth
JF - Journal of Crystal Growth
ER -