Nanotechnology

Studies from K. Ebisawa et al further understanding of physics

  2008 NOV 24 - (VerticalNews.com) -- According to a study from Tokyo, Japan, "Eu3+-doped ZnO nanoneedles were fabricated by thermal evaporation. In order to include Eu in ZnO nanostructures, europium nitrate was used to produce starting droplets from which ZnO nanoneedles were grown."

  "Photoluminescence spectra included a sharp blue peak corresponding to the ZnO band gap and a broad red band due to defect states. In addition, sharp intra-4f transitions of Eu3+ ions were observed. Energy transfer from the ZnO matrix to Eu3+ was also observed. Study of the photoluminescence excitation revealed absorption tail states below the ZnO band gap induced by the inclusion of Eu ions in the ZnO nanoneedles," wrote K. Ebisawa and colleagues.

  The researchers concluded: "The location of Eu ions was assumed to be near the surfaces of the ZnO nanoneedles."

  Ebisawa and colleagues published their study in Japanese Journal of Applied Physics (Photoluminescence properties of Eu3+-doped ZnO nanoneedles. Japanese Journal of Applied Physics, 2008;47(9 Part 1):7236-7238).

  For more information, contact K. Ebisawa, University of Electrocommun, Dept. of Applied Physics & Chemical, Tokyo 1828585, Japan.

  Publisher contact information for the Japanese Journal of Applied Physics is: Institute Pure Applied Physics, 5F Yushima Bldg, 2-31-22 Yushima, Bunkyo-Ku, Tokyo, 113-0034, Japan.

  Keywords: Emerging Technologies, Nanoneedle, Nanostructural, Nanostructure, Nanostructures, Nanotech, NanotechnologyPhysics.

  This article was prepared by VerticalNews Nanotechnology editors from staff and other reports. Copyright 2008, VerticalNews Nanotechnology via VerticalNews.com.