Early stage nucleation of ZnO nanorods by galvanic-cell-based approach

[Display omitted] •In galvanic method, the nucleation of the ZnO nanorods finishes after two minutes.•There exists a condensed ZnO layer underneath of ZnO nanorods.•To improve, a combination of the galvanic and hydrothermal synthesis is demonstrated. The galvanic-cell-based synthesis is considered a...

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Published inMaterials letters Vol. 230; pp. 77 - 79
Main Authors Tran, Dat Q., Nguyen, Oanh T.T., Le, Chi H., Nguyen, Nghia V., Pham, Long D., Hoang, Chung V.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 01.11.2018
Elsevier BV
Subjects
Chemical synthesis
Crystal growth
Electronics materials
Interfaces
Materials science
Nanorods
Nanowires
Nucleation
Semiconductors
Zinc oxide
Zinc oxides
Crystal growth
Interfaces
Semiconductors
Electronics materials
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Summary:[Display omitted] •In galvanic method, the nucleation of the ZnO nanorods finishes after two minutes.•There exists a condensed ZnO layer underneath of ZnO nanorods.•To improve, a combination of the galvanic and hydrothermal synthesis is demonstrated. The galvanic-cell-based synthesis is considered as an effective method for the seed-layer free preparation of ZnO nanorods. However, the nucleation stage of the growth which decides the final structures of ZnO nanorods is still not well-understood. Here we show that the nucleation is almost completed after two minutes of growth and the galvanic-cell-based method results in a condensed ZnO layer beneath of the ZnO nanorods. Beyond this finding, we propose a hybrid approach that combines the galvanic and hydrothermal growth to fabricate the condensed-layer free, well-separated ZnO nanorods that might be compatible for the ZnO-based devices.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2018.07.097