Journal of the Korean Physical Society

, Volume 63, Issue 9, pp 1789–1793 | Cite as

Strong pore-size dependence of the optical properties in porous alumina membranes

  • C. H. Jeon
  • D. H. Kim
  • Y. S. Lee
  • J. K. Han
  • Y. C. Choi
  • S. D. Bu
  • H. Y. Shin
  • S. Yoon
Article
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Accepted:

Abstract

We report on the strong pore-size-dependent optical properties of porous alumina membranes (PAMs) by using the photoluminescence and the optical spectroscopic techniques. The pore diameters of our PAMs varied from 60 to 420 nm. All samples showed a sizable violet/blue emission with a strong temperature dependence. We found that the peak position of the emission shifted to higher energies with increasing pore diameter, which was in accord with the smaller binding energy extracted from the temperature dependence of the emission intensity. From the transmission spectra, we found that the effective bandgap of the PAMs shifted significantly to lower energies with increasing pore diameter, which indicated that the impurity states within the bandgap was affected strongly by the geometry of the PAM.

Keywords

Porous alumina membrane Pore-size dependence Photoluminescence Transmission Optical simulation 
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Copyright information

© The Korean Physical Society 2013

Authors and Affiliations

  • C. H. Jeon
    • 1
  • D. H. Kim
    • 1
  • Y. S. Lee
    • 1
  • J. K. Han
    • 2
  • Y. C. Choi
    • 2
  • S. D. Bu
    • 2
  • H. Y. Shin
    • 3
  • S. Yoon
    • 3
  1. 1.Department of PhysicsSoongsil UniversitySeoulKorea
  2. 2.Department of PhysicsChonbuk National UniversityJeonjuKorea
  3. 3.Department of PhysicsEwha Womans UniversitySeoulKorea

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