Influence of Y-doped induced defects on the optical and magnetic properties of ZnO nanorod arrays prepared by low-temperature hydrothermal process

Chung Yuan Kung, San Lin Young, Hone Zern Chen, Ming Cheng Kao, Lance Horng, Yu-Tai Shih, Chen Cheng Lin, Teng Tsai Lin, Chung Jen Ou

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

One-dimensional pure zinc oxide (ZnO) and Y-doped ZnO nanorod arrays have been successfully fabricated on the silicon substrate for comparison by a simple hydrothermal process at the low temperature of 90°C. The Y-doped nanorods exhibit the same c-axisoriented wurtzite hexagonal structure as pure ZnO nanorods. Based on the results of photoluminescence, an enhancement of defect-induced green-yellow visible emission is observed for the Y-doped ZnO nanorods. The decrease of E2(H) mode intensity and increase of E1(LO) mode intensity examined by the Raman spectrum also indicate the increase of defects for the Y-doped ZnO nanorods. As compared to pure ZnO nanorods, Y-doped ZnO nanorods show a remarked increase of saturation magnetization. The combination of visible photoluminescence and ferromagnetism measurement results indicates the increase of oxygen defects due to the Y doping which plays a crucial role in the optical and magnetic performances of the ZnO nanorods.

Original languageEnglish
Pages (from-to)1-17
Number of pages17
JournalNanoscale Research Letters
Volume7
DOIs
Publication statusPublished - 2012 Jul 24

Fingerprint

Zinc Oxide
Zinc oxide
Nanorods
zinc oxides
nanorods
Magnetic properties
Optical properties
magnetic properties
optical properties
Defects
defects
Temperature
Photoluminescence
photoluminescence
Ferromagnetism
Silicon
Saturation magnetization
wurtzite
ferromagnetism
Raman scattering

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Kung, Chung Yuan ; Young, San Lin ; Chen, Hone Zern ; Kao, Ming Cheng ; Horng, Lance ; Shih, Yu-Tai ; Lin, Chen Cheng ; Lin, Teng Tsai ; Ou, Chung Jen. / Influence of Y-doped induced defects on the optical and magnetic properties of ZnO nanorod arrays prepared by low-temperature hydrothermal process. In: Nanoscale Research Letters. 2012 ; Vol. 7. pp. 1-17.
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Influence of Y-doped induced defects on the optical and magnetic properties of ZnO nanorod arrays prepared by low-temperature hydrothermal process. / Kung, Chung Yuan; Young, San Lin; Chen, Hone Zern; Kao, Ming Cheng; Horng, Lance; Shih, Yu-Tai; Lin, Chen Cheng; Lin, Teng Tsai; Ou, Chung Jen.

In: Nanoscale Research Letters, Vol. 7, 24.07.2012, p. 1-17.

Research output: Contribution to journalArticle

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AU - Kao, Ming Cheng

AU - Horng, Lance

AU - Shih, Yu-Tai

AU - Lin, Chen Cheng

AU - Lin, Teng Tsai

AU - Ou, Chung Jen

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N2 - One-dimensional pure zinc oxide (ZnO) and Y-doped ZnO nanorod arrays have been successfully fabricated on the silicon substrate for comparison by a simple hydrothermal process at the low temperature of 90°C. The Y-doped nanorods exhibit the same c-axisoriented wurtzite hexagonal structure as pure ZnO nanorods. Based on the results of photoluminescence, an enhancement of defect-induced green-yellow visible emission is observed for the Y-doped ZnO nanorods. The decrease of E2(H) mode intensity and increase of E1(LO) mode intensity examined by the Raman spectrum also indicate the increase of defects for the Y-doped ZnO nanorods. As compared to pure ZnO nanorods, Y-doped ZnO nanorods show a remarked increase of saturation magnetization. The combination of visible photoluminescence and ferromagnetism measurement results indicates the increase of oxygen defects due to the Y doping which plays a crucial role in the optical and magnetic performances of the ZnO nanorods.

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