Effect of thermal annealing on the structural and the optical properties of ZnO/MgO nanostructures

G. N. Panin, A. N. Baranov, Y. J. Oh, T. W. Kang, Taewhan Kim

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The effect of thermal annealing on the structural and optical properties of ZnO/MgO nanoparticle structures prepared by solution techniques were investigated with scanning electron microscopy, transmission electron microscopy (TEM), X-ray diffraction (XRD), and cathodoluminescence (CL) measurements. The TEM examination showed that the ZnO/MgO nanoparticles annealed at 400, 600, 800, and 1000 °C had a crystalline wurtzite structure. The size of the particles was in the range between 10 and 100 nm. The blue shift of the CL emission of the samples after annealing at temperatures higher than 600 °C originated from an increase in the Mn x Zn 1-x O band gap and the quantum confinement effect resulting from the small size of the particles.

Original languageEnglish
Pages (from-to)494-500
Number of pages7
JournalJournal of Crystal Growth
Volume279
Issue number3-4
DOIs
StatePublished - 2005 Jun 1

Fingerprint

Cathodoluminescence
cathodoluminescence
Nanostructures
Optical properties
Annealing
Nanoparticles
Transmission electron microscopy
optical properties
nanoparticles
transmission electron microscopy
annealing
Quantum confinement
blue shift
wurtzite
Structural properties
Energy gap
examination
Crystalline materials
X ray diffraction
Scanning electron microscopy

Keywords

  • A1. Nanostructures
  • A2. Growth from solutions
  • B1. Zinc compounds
  • B2. Semiconducting II-VI materials

Cite this

Panin, G. N. ; Baranov, A. N. ; Oh, Y. J. ; Kang, T. W. ; Kim, Taewhan. / Effect of thermal annealing on the structural and the optical properties of ZnO/MgO nanostructures. In: Journal of Crystal Growth. 2005 ; Vol. 279, No. 3-4. pp. 494-500.
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Effect of thermal annealing on the structural and the optical properties of ZnO/MgO nanostructures. / Panin, G. N.; Baranov, A. N.; Oh, Y. J.; Kang, T. W.; Kim, Taewhan.

In: Journal of Crystal Growth, Vol. 279, No. 3-4, 01.06.2005, p. 494-500.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effect of thermal annealing on the structural and the optical properties of ZnO/MgO nanostructures

AU - Panin, G. N.

AU - Baranov, A. N.

AU - Oh, Y. J.

AU - Kang, T. W.

AU - Kim, Taewhan

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AB - The effect of thermal annealing on the structural and optical properties of ZnO/MgO nanoparticle structures prepared by solution techniques were investigated with scanning electron microscopy, transmission electron microscopy (TEM), X-ray diffraction (XRD), and cathodoluminescence (CL) measurements. The TEM examination showed that the ZnO/MgO nanoparticles annealed at 400, 600, 800, and 1000 °C had a crystalline wurtzite structure. The size of the particles was in the range between 10 and 100 nm. The blue shift of the CL emission of the samples after annealing at temperatures higher than 600 °C originated from an increase in the Mn x Zn 1-x O band gap and the quantum confinement effect resulting from the small size of the particles.

KW - A1. Nanostructures

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