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RESEARCH PRODUCT
Synthesis and optical characterization of Er-doped bismuth titanate nanoparticles grown by sol-gel hydrothermal method
Inocencio R. MartínPedro MuñozS. FuentesJaime LlanosEmigdio Chavez-angelEmigdio Chavez-angelM. Vegasubject
Sol-gel processesPhotoluminescenceMaterials scienceScanning electron microscopeBismuth titanateAnalytical chemistryNanoparticleNanotechnology02 engineering and technology01 natural sciencesHydrothermal circulationchemistry.chemical_compound0103 physical sciencesMaterials ChemistryPhotoluminescenceSol-gel010302 applied physicsOxide materialsProcess Chemistry and TechnologyDoping021001 nanoscience & nanotechnologyHydrothermalSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialschemistryCeramics and CompositesParticle size0210 nano-technologydescription
Abstract The Er 3+ -doped bismuth titanate (Bi 4 Ti 3 O 12 , BIT) nanoparticles were synthesized by a combined sol–gel and hydrothermal method under a partial oxygen pressure of 30 bar. The composition and morphology were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Raman scattering. They showed pure and homogeneous spherical BIT nanoparticles with a size below the 30 nm. The incorporation of Er ions showed a strong decrease in the lattice parameters, as well as averaged particle size. The photoluminescence up-conversion (excitation wavelength =1480 nm) showed an enhancement of the infrared emission (980 nm) as Er concentration increased, achieving a maximum for 6% mol, while photoluminescence spectra (excitation wavelength =473 nm) showed a strong green emission (529 and 553 nm) with a maximum at 4% mol.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-03-01 |