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- 1. Appl. Phys. Lett. 89, 031116 (2006) , “Er3+ excited state absorption and the low fraction of nanocluster-excitable Er3+ in SiOx”, C. J. Oton, W. H. Loh, and A. J. KenyonDespite the observation by a number of groups of a strong luminescence sensitization effect of erbium ions by excitation exchange from silicon nanoclusters, there is considerable experimental evidence that the fraction of Er ions excited by Si-nc is actually very low for much of the material... (Read more)
- 2. J. Appl. Phys. 100, 034318 (2006) , “Electric-field-induced quenching of photoluminescence in photoconductive organic thin film structures based on Eu3+ complexes”, J. Kalinowski, W. Stampor, M. Cocchi, D. Virgili, and V. FattoriA large electric field effect on photoluminescence (PL) from electroluminescent emitters sandwiched between two high-work-function electrodes is reported and a model of the effect formulated. We examine the PL behavior of Eu3+ complex-based organic thin films subjected to increasing... (Read more)
- 3. J. Appl. Phys. 100, 023529 (2006) , “Visible and near-infrared photoluminescences of europium-doped titania film”, C. W. Jia, E. Q. Xie, J. G. Zhao, Z. W. Sun, and A. H. PengEu3+-doped TiO2 films were prepared on silicon substrates by sol-gel method. Anatase and rutile phases appear when the samples were heat treated in oxygen atmosphere at 500 and 900 °C, respectively. Photoluminescence (PL) properties were investigated under the excitation... (Read more)
- 4. J. Appl. Phys. 99, 104305 (2006) , “Optical activation of Eu ions in nanoporous GaN films”, A. P. Vajpeyi, S. Tripathy, L. S. Wang, B. C. Foo, S. J. Chua, E. A. Fitzgerald, and E. AlvesA systematic optical activation study of Eu-implanted nanoporous GaN films has been carried out as a function of ion dose and annealing temperature. The nanoporous GaN films are prepared by photoelectrochemical etching of n-type GaN films in HF-based electrolyte. Eu ions are implanted in both... (Read more)
- 5. Phys. Rev. B 74, 195101 (2006) , “Characterization of the hyperfine interaction in europium-doped yttrium orthosilicate and europium chloride hexahydrate”, J. J. Longdell, A. L. Alexander, and M. J. SellarsWe present characterization of the hyperfine interaction for the europium in hydrated europium chloride and as a dopant in yttrium orthosilicate. The Zeeman and pseudoquadrupole tensors were determined by measuring the hyperfine splittings while rotating the direction of a weak (~300 G) magnetic... (Read more)
- 6. Phys. Rev. B 71, 245203 (2005) , “Electrical Activity of Er and Er-O Centers in Silicon”, D. Prezzi, T. A. G. Eberlein, R. Jones, J. S. Filhol, J. Coutindo, M. J. Shaw, P. R. Briddon.Spin-polarized density functional calculations are carried out on Er and Er-oxygen defects in crystalline Si. We find that the interstitial site is favored but the diffusion barrier of Eri is only 1.9 eV, and inevitably Eri forms complexes with impurities and... (Read more)
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