Surface reaction of ZnO nanowires with electron-beam generated alumina vapor

Hong Jin Fan; Andriy Lotnyk; Roland Scholz; Yang Yang; Dong Sik Kim; Eckhard Pippel; Stephan Senz; Dietrich Hesse; Margit Zacharias

doi:10.1021/jp712135p

Surface reaction of ZnO nanowires with electron-beam generated alumina vapor

Hong Jin Fan, Andriy Lotnyk, Roland Scholz, Yang Yang, Dong Sik Kim, Eckhard Pippel, Stephan Senz, Dietrich Hesse, Margit Zacharias

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

17 Citations (Scopus)

Abstract

Single-crystal ZnO nanowires are reacted at 800-900°C in vacuum with alumina vapor generated by electron beam evaporation. The morphology changes after the solid-vapor reactions are studied in detail using electron microscopy and compared to other similar spinel nanostructures. Unlike other solid-vapor reactions like MgO-Al₂O₃ and ZnO-Ga₂O ₃ where a continuous spinel layer is formed, the reaction of ZnO nanowires with alumina vapor is unique. The initially smooth surfaces of ZnO nanowires become rugged due to surface decomposition without the growth of spinel layers. A formation mechanism is proposed that the surface reaction of ZnO with alumina vapor might constitute a process of a unilateral transport of ZnO and the associated surface diffusion.

Original language	English
Pages (from-to)	6770-6774
Number of pages	5
Journal	Journal of Physical Chemistry C
Volume	112
Issue number	17
DOIs	https://doi.org/10.1021/jp712135p
Publication status	Published - May 1 2008
Externally published	Yes

ASJC Scopus Subject Areas

Electronic, Optical and Magnetic Materials
General Energy
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

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abstract = "Single-crystal ZnO nanowires are reacted at 800-900°C in vacuum with alumina vapor generated by electron beam evaporation. The morphology changes after the solid-vapor reactions are studied in detail using electron microscopy and compared to other similar spinel nanostructures. Unlike other solid-vapor reactions like MgO-Al2O3 and ZnO-Ga2O 3 where a continuous spinel layer is formed, the reaction of ZnO nanowires with alumina vapor is unique. The initially smooth surfaces of ZnO nanowires become rugged due to surface decomposition without the growth of spinel layers. A formation mechanism is proposed that the surface reaction of ZnO with alumina vapor might constitute a process of a unilateral transport of ZnO and the associated surface diffusion.",

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T1 - Surface reaction of ZnO nanowires with electron-beam generated alumina vapor

AU - Fan, Hong Jin

AU - Lotnyk, Andriy

AU - Scholz, Roland

AU - Yang, Yang

AU - Kim, Dong Sik

AU - Pippel, Eckhard

AU - Senz, Stephan

AU - Hesse, Dietrich

AU - Zacharias, Margit

PY - 2008/5/1

Y1 - 2008/5/1

N2 - Single-crystal ZnO nanowires are reacted at 800-900°C in vacuum with alumina vapor generated by electron beam evaporation. The morphology changes after the solid-vapor reactions are studied in detail using electron microscopy and compared to other similar spinel nanostructures. Unlike other solid-vapor reactions like MgO-Al2O3 and ZnO-Ga2O 3 where a continuous spinel layer is formed, the reaction of ZnO nanowires with alumina vapor is unique. The initially smooth surfaces of ZnO nanowires become rugged due to surface decomposition without the growth of spinel layers. A formation mechanism is proposed that the surface reaction of ZnO with alumina vapor might constitute a process of a unilateral transport of ZnO and the associated surface diffusion.

AB - Single-crystal ZnO nanowires are reacted at 800-900°C in vacuum with alumina vapor generated by electron beam evaporation. The morphology changes after the solid-vapor reactions are studied in detail using electron microscopy and compared to other similar spinel nanostructures. Unlike other solid-vapor reactions like MgO-Al2O3 and ZnO-Ga2O 3 where a continuous spinel layer is formed, the reaction of ZnO nanowires with alumina vapor is unique. The initially smooth surfaces of ZnO nanowires become rugged due to surface decomposition without the growth of spinel layers. A formation mechanism is proposed that the surface reaction of ZnO with alumina vapor might constitute a process of a unilateral transport of ZnO and the associated surface diffusion.

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Surface reaction of ZnO nanowires with electron-beam generated alumina vapor

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