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Evolution of the doping regimes in the Al-doped SnO2 nanoparticles prepared by a polymer precursor method
(IOP Publishing, 2015)
In this study, we report on the structural and hyperfine properties of Al-doped SnO2 nanoparticles synthesized by a polymer precursor method. The x-ray diffraction data analysis carried out using the Rietveld refinement ...
Effect of strontium doping on the structural, morphological, and dielectric properties of PZT ceramics
(2016-01-01)
Strontium-modified lead zirconate titanate ceramics was prepared by the polymeric precursor method. The effect of Pb(II) substitution by Sr(II) in A site of the perovskite structure at molar percentages of 0.0, 0.2, 0.4 ...
Substitutional Ta-doping in Y2O3 semiconductor by sol-gel synthesis: Experimental and theoretical studies
(IOP Publishing, 2017-07)
The Pechini sol-gel method has been employed for the synthesis of pure and (181Hf→)181Ta-doped Y2O3 nanopowders. We performed a structural characterization from the micro to the subnanoscopic scale by means of scanning ...
Structural, dielectric and ferroelectric properties of Nb-doped PZT thin films produced by oxide precursor method
(2002-01-01)
Recently, was proposed a chemical method for preparation of ferroelectric thin films based on oxide precursors. In this work, PZT thin films were prepared to attest the viability of this method for cation-substitution. In ...
Electron trapping of laser-induced carriers in Er-doped SnO2 thin films
(Elsevier B.V., 2007-01-01)
In order to investigate optically excited electronic transport in Er-doped SnO2, thin films are excited with the fourth harmonic of an Nd:YAG laser (266nm) at low temperature, yielding conductivity decay when the illumination ...
Dopagem substitucional de peroviskitas com metais de transição 3d: um estudo ab initio
(Universidade Federal de São CarlosUFSCarPrograma de Pós-Graduação em Física - PPGFCâmpus São Carlos, 2022-10-04)
The global demand for energy has brought into focus the halide perovskites as materials
with high potential for applications in photovoltaic devices. Great progress has been made
in the last 10 years, demonstrating the ...
Optical characteristics of Er3+-Yb3+ doped SnO2 xerogels
(Elsevier B.V., 2002-10-07)
Er3+ doped SnO2 xerogels have been obtained from aqueous colloidal suspensions. Emission and excitation spectra were obtained and allowed the identification of two main families of sites for Er3+. In the first one Er3+ ...
Optical characteristics of Er3+-Yb3+ doped SnO2 xerogels
(Elsevier B.V., 2002-10-07)
Er3+ doped SnO2 xerogels have been obtained from aqueous colloidal suspensions. Emission and excitation spectra were obtained and allowed the identification of two main families of sites for Er3+. In the first one Er3+ ...