Tuning of crystal quality and optical properties of hydrothermally synthesized ZnO nanorods by magnetic field

Y. F. Chiang, S. M. Kuo, C. P. Liu, J. C.A. Huang, W. T. Yao, Y. C. Wu

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

This study systematically investigates the effects of magnetic field on the defects suppression in hydrothermally synthesized ZnO nanorods. A clear correlation between the crystalline quality and magnetic field-induced suppression of defect-related emission intensity is demonstrated. The density of defects in the nanorods is reduced by increasing the strength of the applied magnetic field, drastically reducing the intensity of visible photoluminescence. The mechanism of the magnetic field-induced suppression of defect-related emissions in hydrothermally synthesized nanorods is explained by a model-based analysis of the paths of the electrical currents and the resulting Lorentz force in the related neighboring pair of rolling cellular patterns that are generated from RayleigheBenard convection. This work provides a new means of controlling the defects in nanomaterials, improving the crystalline quality of such materials, and thereby adjusting their light-emitting properties.

Original languageEnglish
Pages (from-to)1113-1118
Number of pages6
JournalMaterials Chemistry and Physics
Volume148
Issue number3
DOIs
Publication statusPublished - 2014

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

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