Cu2O nanowires in an alumina template: Electrochemical conditions for the synthesis and photoluminescence characteristics

Eunseong Ko, Jinsub Choi, Koichi Okamoto, Yongsug Tak, Jaeyoung Lee

Research output: Contribution to journalArticle

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Abstract

Cu2O nanowires, mainly consisting of (100) and (200) polycrystalline structures with a length of 4 μm are prepared by electrochemical deposition using a porous alumina template. It is found that the optimized electrochemical conditions to prepare Cu2O nanowires are different from those for the formation of a bulk thin Cu2O layer since different pH values are found between the tip of the pores and the bulk, due to diffusion limits in porous alumina with an extremely high aspect ratio of 300. We point out that Cu2O (200), Cu2O (111), Cu, and co-deposited alloys can be obtained under specific electrochemical conditions. In addition, the optical band gap of the prepared Cu2O nanowires with a length of 4 μm and a diameter of 200 nm is estimated to be 2.17 eV from photoluminescence measurements.

Original languageEnglish
Pages (from-to)1505-1509
Number of pages5
JournalChemPhysChem
Volume7
Issue number7
DOIs
Publication statusPublished - Jul 17 2006

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Aluminum Oxide
Nanowires
Photoluminescence
nanowires
templates
aluminum oxides
photoluminescence
synthesis
Optical band gaps
high aspect ratio
Aspect ratio
porosity

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry

Cite this

Cu2O nanowires in an alumina template : Electrochemical conditions for the synthesis and photoluminescence characteristics. / Ko, Eunseong; Choi, Jinsub; Okamoto, Koichi; Tak, Yongsug; Lee, Jaeyoung.

In: ChemPhysChem, Vol. 7, No. 7, 17.07.2006, p. 1505-1509.

Research output: Contribution to journalArticle

Ko, Eunseong ; Choi, Jinsub ; Okamoto, Koichi ; Tak, Yongsug ; Lee, Jaeyoung. / Cu2O nanowires in an alumina template : Electrochemical conditions for the synthesis and photoluminescence characteristics. In: ChemPhysChem. 2006 ; Vol. 7, No. 7. pp. 1505-1509.
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