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Title: Up conversion from visible to ultraviolet in bulk ZnO implanted with Tm ions
Author: Monteiro, T.
Neves, A. J.
Soares, M. J.
Carmo, M. C.
Peres, M.
Alves, E.
Rita, E.
Keywords: Zinc compounds
II-VI semiconductors
iion implantation
Optical frequency conversion
Ultraviolet spectra
Visible spectra
Energy gap
Issue Date: Nov-2005
Publisher: American Institute of Physics
Abstract: We report on the up-converted ultraviolet near-band edge emission of bulk ZnO generated by visible and ultraviolet photons with energies below the band gap. This up-converted photoluminescence was observed in samples intentionally doped with Tm ions, suggesting that the energy levels introduced by the rare earth ion in the ZnO band gap are responsible for this process.
Peer review: yes
ISSN: 0003-6951
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Appears in Collections:DFis - Artigos

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