Now showing items 1-10 of 490
Infrared-to-visible frequency upconversion in transparent glass ceramics containing trivalent-rare-earth-doped nanocrystals
In this work we report on visible upconversion emission in Er 3+-, and Ho3+-doped PbGeO3-PbF 2-CdF2-based transparent glass ceramics under 980 nm infrared excitation. In erbium-doped vitroceramic samples, blue(410 ran), ...
Optical and transport properties of rare-earth trivalent ions located at different sites in sol-gel SnO2
Photoluminescence and photo-excited conductivity data as well as structural analysis are presented for sol-gel SnO2 thin films doped with rare earth ions Eu3+ and Er3+, deposited by sol-gel-dip-coating technique. ...
Influence of rare earth doping on the structural and catalytic properties of nanostructured tin oxide
Nanoparticles of tin oxide, doped with Ce and Y, were prepared using the polymeric precursor method. The structural variations of the tin oxide nanoparticles were characterized by means of nitrogen physisorption, carbon ...
Fast method for obtaining erbium-doped fibre intrinsic parameters
(Iee-inst Elec EngHertfordInglaterra, 1996)
Red, green, and blue upconversion luminescence in ytterbium-sensitized praseodymium-doped lead-cadmium-germanate glass
Blue, green, red, and near-infrared upconversion luminescence in the wavelength region of 480 - 740 nm in Pr3+/Yb3+-codoped lead-cadmium-germanate glass under 980 nm diode laser excitation, is presented. Upconversion ...
Exponential depletion of neutral dangling bonds density (D-0) by rare-earth doping in amorphous Si films
(ELSEVIER SCIENCE BVAMSTERDAM, 2013-08-02)
In this work we study the effect reduction in the density of dangling bond species D-0 states in rare-earth (RE) doped a-Si films as a function concentration for different RE-specimens. The films a-Si-1_(x) REx, RE=Y3+, ...
Optical emission and electron capture of rare-earth trivalent ions located at distinct sites in SnO(2) thin films
(Elsevier B.V., 2009-01-01)
We present photoluminescence and decay of photo excited conductivity data for sol-gel SnO(2) thin films doped with rare earth ions Eu(3+) and Er(3+), a material with nanoscopic crystallites. Photoluminescence spectra are ...