ZnO Films Grown on Si Substrates with Au Nanocrystallites as Nuclei

Feng, Xia, Kang, Junong, Inami, Watara, Yuan, Xiaoii, Terauchi, Masami, Sekiguchi, Takashi, Tsunekawa, Shin, Ito, Shun and Sakurai, Toshio (2007) ZnO Films Grown on Si Substrates with Au Nanocrystallites as Nuclei. Crystal Growth & Design, 7 3: 564-568.


Author Feng, Xia
Kang, Junong
Inami, Watara
Yuan, Xiaoii
Terauchi, Masami
Sekiguchi, Takashi
Tsunekawa, Shin
Ito, Shun
Sakurai, Toshio
Title ZnO Films Grown on Si Substrates with Au Nanocrystallites as Nuclei
Journal name Crystal Growth & Design  (ERA 2012 Listed)    (ERA 2010 Rank A)   Check publisher's open access policy
Publication date 2007-01
Sub-type Article
Year available 2007
DOI 10.1021/cg060237s
Volume number 7
Issue number 3
ISSN 1528-7483
Start page 564
End page 568
Total pages 5
Place of publication Washington, DC, U. S. A.
Publisher American Chemical Society ( ACS Publications)
Language eng
Subject 0403 Geology
040306 Mineralogy and Crystallography
Abstract ZnO films were grown on Si substrates with Au nanocrystallites at different temperatures. The morphologies of Au at different annealing temperatures suggest that Au nanocrystallites can perform in the role of crystal nucleus. Surface morphologies of as-grown ZnO films were characterized as a number of hexagonal heaps in the size range of 3−5 μm by scanning electron microscopy. X-ray diffraction data support the theory that the ZnO grains are well-aligned in the c-axis. Cathodoluminescence mappings show that the ultraviolet emission at the band edge is suppressed on top of the hexagonal heap in which the green band is intense. The red shift of the E2 mode demonstrates that the ZnO films in our work are under a weak tensile stress. This should be attributed to the effect of Au nanocrystallites. The convergent beam electron diffraction (CBED) patterns further reveal that the ZnO films grow in Zn-polar. An ab initio simulation agrees well with the results obtained from the CBED images and provides an intrinsic geometry of the growth of ZnO films.
Keyword Zn0
Nanocrystallites
Morphological Change
Hexagonal Grid
Cathodoluminescence (CL)
Q-Index Code C1

 
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Created: Fri, 15 Jan 2010, 13:29:41 EST by Rosalind Blair on behalf of Sustainable Minerals Institute