Electrospinning Synthesis and Photoluminescence Properties of One-Dimensional SiO&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;:Tb&amp;lt;sup&amp;gt;3+&amp;lt;/sup&amp;gt; Nanofibers and Nanobelts

Abualrejal, Murad M. A.; Zou, Haifeng; Chen, Jie; Song, Yanhua; Ye, Sheng

doi:10.4236/anp.2017.62004

Cited by 14 publications

(2 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, the sharp peak located at 149.2 eV corresponds to Tb 4d of the Tb 3+ ion. 63 However, after introducing Ce into this system, i.e., in YZO:Tb (2 mol %),Ce (2 mol %), the Tb 4d peak at 149.2 eV disappears, and another peak (157.7 eV) appears within the Y 3d peak, corresponding to the presence of Tb 4+ ions. 64,65 The fact that the YZO:Tb (2 mol %),Ce (2 mol %) still results in emission suggests that Tb 3+ is still present in the sample; however, the lack of a Tb 3+ signature in the XPS can be attributed to the concentration being below the instrument detection limit.…”

Section: Resultsmentioning

confidence: 95%

Role of Ce in Manipulating the Photoluminescence of Tb Doped Y₂Zr₂O₇

et al. 2020

View full text Add to dashboard Cite

Y 2 Zr 2 O 7 (YZO) is widely used as a host material for luminescent centers because of its high stability and the ability to accommodate anion defects. In this work, the effects of Ce and Tb doping on the photoluminescence (PL) properties of YZO nanoparticles (NPs) are studied in detail to correlate the emission intensity with the dopant concentration. Herein, a two-step synthesis method of coprecipitation and molten salt was employed to prepare the YZO:Tb,Ce NPs. The single doped YZO:Tb (2 mol %) NPs shows a strong Tb 3+ emission. However, after codoping with Ce ions, the Tb 3+ emission is quenched instead of the expected sensitization. To identify the mechanism of quenching (oxidation state/local symmetry), X-ray absorption spectroscopy (XAS) and X-ray photoelectron spectroscopy (XPS) were performed. The Ce 4+ ions were observed to drive further oxidation of Tb to a nonluminescent +4 oxidation state. Alternatively, Eu 3+ was employed to probe local symmetry changes upon Ce doping. The asymmetry ratio of the magnetic and electronic transitions indicates that the Ce dopant also pushes the system into a higher symmetry, resulting in two separate quenching mechanisms.

show abstract

Section: Resultsmentioning

confidence: 95%

Role of Ce in Manipulating the Photoluminescence of Tb Doped Y₂Zr₂O₇

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The peaks at 1240 and 1273 eV were assigned to Tb 3+ 3d 5/2 and Tb 3+ 3d 3/2 of Tb–NO 3 , respectively [ 41 ]. The peaks of Si–O–Tb coordination were identified at 1243 and 1276 eV [ 42 ]. By comparing the intensities of these peaks, it can be estimated that an equal amount of lanthanide centers is involved in the coordination with the polymer matrix via Si–O and remains uncoordinated as Tb(NO 3 ) 3 .…”

Section: Resultsmentioning

confidence: 99%

Lanthanide and Ladder-Structured Polysilsesquioxane Composites for Transparent Color Conversion Layers

et al. 2023

View full text Add to dashboard Cite

Ladder-type polysilsesquioxanes (LPSQs) containing phenyl as a high refractive index unit and cyclic epoxy as a curable unit were found to be excellent candidates for a transparent color conversion layer for displays due to being miscible with organic solvents and amenable to transparent film formation. Therefore, the LPSQs were combined with luminescent lanthanide metals, europium Eu(III), and terbium Tb(III), to fabricate transparent films with various emission colors, including red, orange, yellow, and green. The high luminescence and transmittance properties of the LPSQs–lanthanide composite films after thermal curing were attributed to chelating properties of hydroxyl and polyether side chains of LPSQs to lanthanide ions, as well as a light sensitizing effect of phenyl side chains of the LPSQs. Furthermore, Fourier-transform infrared (FT-IR) and X-ray photoelectron spectroscopy and nanoindentation tests indicated that the addition of the nanoparticles to the LPSQs moderately enhanced the epoxy conversion rate and substantially improved the wear resistance, including hardness, adhesion, and insusceptibility to atmospheric corrosion in a saline environment. Thus, the achieved LPGSG–lanthanide hybrid organic–inorganic material could effectively serve as a color conversion layer for displays.

show abstract

Synthesis of Snowman‐shaped Photocatalytic Microrotors and Mechanical Micropumps

Zhou

et al. 2021

ChemNanoMat

View full text Add to dashboard Cite

We synthesize snowman‐shaped microrotors that are composed of TiO2 and SiO2 particles fused together and half‐coated with Au. The microrotors rotate in the presence of fuel and UV light and the rotation speed is readily modulated by the fuel concentration and the light intensity. Such a microrotor can be transformed into a mechanical micropump that hydrodynamically, rather than electrokinetically, pumps nearby fluids and particles, with a pump power that scales linearly with its rotation speed. This work thereby opens up a new way for the study of microrotors as micropumps.

show abstract

Electrospinning Synthesis and Photoluminescence Properties of One-Dimensional SiO<sub>2</sub>:Tb<sup>3+</sup> Nanofibers and Nanobelts

Abstract: Controlled synthesis of functional photoluminescent materials is of particular interest due to their fascinating optical properties. Herein, highly uniform one-dimensional (1D)

Cited by 14 publications

References 16 publications

Role of Ce in Manipulating the Photoluminescence of Tb Doped Y₂Zr₂O₇

Role of Ce in Manipulating the Photoluminescence of Tb Doped Y₂Zr₂O₇

Lanthanide and Ladder-Structured Polysilsesquioxane Composites for Transparent Color Conversion Layers

Synthesis of Snowman‐shaped Photocatalytic Microrotors and Mechanical Micropumps

Contact Info

Product

Resources

About

Electrospinning Synthesis and Photoluminescence Properties of One-Dimensional SiO&lt;sub&gt;2&lt;/sub&gt;:Tb&lt;sup&gt;3+&lt;/sup&gt; Nanofibers and Nanobelts

Abstract: Controlled synthesis of functional photoluminescent materials is of particular interest due to their fascinating optical properties. Herein, highly uniform one-dimensional (1D)

Cited by 14 publications

References 16 publications

Role of Ce in Manipulating the Photoluminescence of Tb Doped Y2Zr2O7

Role of Ce in Manipulating the Photoluminescence of Tb Doped Y2Zr2O7

Lanthanide and Ladder-Structured Polysilsesquioxane Composites for Transparent Color Conversion Layers

Synthesis of Snowman‐shaped Photocatalytic Microrotors and Mechanical Micropumps

Contact Info

Product

Resources

About

Electrospinning Synthesis and Photoluminescence Properties of One-Dimensional SiO<sub>2</sub>:Tb<sup>3+</sup> Nanofibers and Nanobelts

Role of Ce in Manipulating the Photoluminescence of Tb Doped Y₂Zr₂O₇

Role of Ce in Manipulating the Photoluminescence of Tb Doped Y₂Zr₂O₇