ZnO/cubic (Mg,Zn)O radial nanowire heterostructures

Y. W. Heo; M. Kaufman; K. Pruessner; K. N. Siebein; D. P. Norton; F. Ren

doi:10.1007/s00339-004-2667-1

ZnO/cubic (Mg,Zn)O radial nanowire heterostructures

Y. W. Heo
, M. Kaufman
, K. Pruessner
, K. N. Siebein
, D. P. Norton
, F. Ren

University of Florida

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

The formation and properties of radial heteroepitaxial ZnO/(Mg,Zn)O nanowires is reported in which the (Mg,Zn)O is cubic. Synthesis is achieved via a catalyst-driven molecular beam epitaxy technique. The nanowires were grown on Ag-coated Si substrates at growth temperatures ranging from T_g = 300 to 500 °C, using Zn, Mg, and O₃/O₂ as the reactive flux. Structural and compositional analyses indicate that the core of the nanowire is ZnO possessing the hexagonal wurtzite structure, with the (Mg,Zn)O sheath assuming the cubic rock salt structure. Since (Mg,Zn)O has a larger band-gap energy (up to 7.8 eV) than that of ZnO (3.37 eV), these radial heterostructure nanorods provide an interesting system for quantum confinement and one-dimensional nanoscale device studies.

Original language	English
Pages (from-to)	263-266
Number of pages	4
Journal	Applied Physics A: Materials Science and Processing
Volume	80
Issue number	2
DOIs	https://doi.org/10.1007/s00339-004-2667-1
State	Published - Feb 2005

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title = "ZnO/cubic (Mg,Zn)O radial nanowire heterostructures",

abstract = "The formation and properties of radial heteroepitaxial ZnO/(Mg,Zn)O nanowires is reported in which the (Mg,Zn)O is cubic. Synthesis is achieved via a catalyst-driven molecular beam epitaxy technique. The nanowires were grown on Ag-coated Si substrates at growth temperatures ranging from Tg = 300 to 500 °C, using Zn, Mg, and O3/O2 as the reactive flux. Structural and compositional analyses indicate that the core of the nanowire is ZnO possessing the hexagonal wurtzite structure, with the (Mg,Zn)O sheath assuming the cubic rock salt structure. Since (Mg,Zn)O has a larger band-gap energy (up to 7.8 eV) than that of ZnO (3.37 eV), these radial heterostructure nanorods provide an interesting system for quantum confinement and one-dimensional nanoscale device studies.",

author = "Heo, \{Y. W.\} and M. Kaufman and K. Pruessner and Siebein, \{K. N.\} and Norton, \{D. P.\} and F. Ren",

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T1 - ZnO/cubic (Mg,Zn)O radial nanowire heterostructures

AU - Heo, Y. W.

AU - Kaufman, M.

AU - Pruessner, K.

AU - Siebein, K. N.

AU - Norton, D. P.

AU - Ren, F.

PY - 2005/2

Y1 - 2005/2

N2 - The formation and properties of radial heteroepitaxial ZnO/(Mg,Zn)O nanowires is reported in which the (Mg,Zn)O is cubic. Synthesis is achieved via a catalyst-driven molecular beam epitaxy technique. The nanowires were grown on Ag-coated Si substrates at growth temperatures ranging from Tg = 300 to 500 °C, using Zn, Mg, and O3/O2 as the reactive flux. Structural and compositional analyses indicate that the core of the nanowire is ZnO possessing the hexagonal wurtzite structure, with the (Mg,Zn)O sheath assuming the cubic rock salt structure. Since (Mg,Zn)O has a larger band-gap energy (up to 7.8 eV) than that of ZnO (3.37 eV), these radial heterostructure nanorods provide an interesting system for quantum confinement and one-dimensional nanoscale device studies.

AB - The formation and properties of radial heteroepitaxial ZnO/(Mg,Zn)O nanowires is reported in which the (Mg,Zn)O is cubic. Synthesis is achieved via a catalyst-driven molecular beam epitaxy technique. The nanowires were grown on Ag-coated Si substrates at growth temperatures ranging from Tg = 300 to 500 °C, using Zn, Mg, and O3/O2 as the reactive flux. Structural and compositional analyses indicate that the core of the nanowire is ZnO possessing the hexagonal wurtzite structure, with the (Mg,Zn)O sheath assuming the cubic rock salt structure. Since (Mg,Zn)O has a larger band-gap energy (up to 7.8 eV) than that of ZnO (3.37 eV), these radial heterostructure nanorods provide an interesting system for quantum confinement and one-dimensional nanoscale device studies.

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DO - 10.1007/s00339-004-2667-1

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EP - 266

JO - Applied Physics A: Materials Science and Processing

JF - Applied Physics A: Materials Science and Processing

IS - 2

ER -

ZnO/cubic (Mg,Zn)O radial nanowire heterostructures

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