Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Surfactant effect of antimony addition to the morphology of self-catalyzed InAs1−xSbx nanowires
AU - Anyebe, Ezekiel
AU - Rajpalke, Mohana K.
AU - Veal, Tim D.
AU - Jin, C. J.
AU - Wang, Z. M.
AU - Zhuang, Qiandong
PY - 2015/4
Y1 - 2015/4
N2 - The effect of Sb addition on the morphology of self-catalyzed InAsSb nanowires (NWs) is systematically investigated. InAs NWs were grown by molecular beam epitaxy with and without antimony (Sb) flux. It is demonstrated that trace amount of Sb flux is capable of tuning the geometry of NWs, i.e. it enhances lateral growth and suppresses axial growth. We attributed these behaviors to the surfactant effect of Sb which results in modifications to the kinetic and thermodynamic processes. The thermodynamic mechanism that accounts for Sb segregation in InAsSb NWs is also elucidated. This study opens a new route towards precisely controlled NWgeometry by Sb addition.
AB - The effect of Sb addition on the morphology of self-catalyzed InAsSb nanowires (NWs) is systematically investigated. InAs NWs were grown by molecular beam epitaxy with and without antimony (Sb) flux. It is demonstrated that trace amount of Sb flux is capable of tuning the geometry of NWs, i.e. it enhances lateral growth and suppresses axial growth. We attributed these behaviors to the surfactant effect of Sb which results in modifications to the kinetic and thermodynamic processes. The thermodynamic mechanism that accounts for Sb segregation in InAsSb NWs is also elucidated. This study opens a new route towards precisely controlled NWgeometry by Sb addition.
KW - MBE
KW - antimony
KW - surfactant
KW - self-catalyzed
KW - InAsSb nanowire
KW - morphology
U2 - 10.1007/s12274-014-0621-x
DO - 10.1007/s12274-014-0621-x
M3 - Journal article
VL - 8
SP - 1309
EP - 1319
JO - Nano Research
JF - Nano Research
SN - 1998-0124
IS - 4
ER -