Silver-insertion induced improvements in dielectric characteristics of the Hf-based film

Wu, Bo; Zhang, Peng; Sun, Bai; Qin-xiang, Gao

doi:10.1016/j.jallcom.2013.05.125

Cited by 8 publications

(2 citation statements)

References 24 publications

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“…The space charge accumulated inside the medium is affected by factors such as charge source, migration, sinking, and collapse. In general, two tunneling mechanisms are focused: the Fowler-Nordheim and Schottky mechanism [30]. Since this article is tested under 10 kV/mm and 20 kV/mm, the charge mainly comes from the Schottky effect.…”

Section: Space Chargementioning

confidence: 99%

Dielectric and space charge characteristics of nano-modified liquid silicone rubber for high-voltage DC cable accessories

Chen

Zhang

et al. 2020

J Mater Sci: Mater Electron

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In order to solve the problem of space charge accumulation in high-voltage DC cable accessories, nanometer titanium dioxide (TiO 2) doping method is used to improve the space charge performance of liquid silicone rubber (LSR). Conductivity, dielectric spectrum and DC breakdown field strength, space charge distribution, and the trap level distribution of nano-TiO 2 / LSR composite samples were tested in this paper. With the increase of the doping concentration of nanoparticles, the DC conductivity increased, and the DC breakdown field strength decreased. The ε r of the TiO 2 /LSR composite sample increased with the increase in the doping concentration of nano-TiO 2. As the frequency increased, tanδ decreased first in the lowfrequency region and then increased in the high frequency. When the electric field strength increases from 10 to 20 kV/mm, the same polarity charges appear near the upper and lower electrodes of the sample, and the space charge accumulation doubled. After the addition of nano-TiO 2 , under the two electric field strengths, the space charge accumulation of 4 wt%-TiO 2 / LSR composite materials decreased by 24.55 nc and 81.03 nc, respectively. The trap energy level of the 4 wt% nano-TiO 2 composites becomes smaller, and shallow traps are introduced, it was verified that the addition of 4 wt% nano-TiO 2 particles reduced the space charge inside the composite sample and achieved the effect of suppressing space charge.

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Section: Space Chargementioning

confidence: 99%

Dielectric and space charge characteristics of nano-modified liquid silicone rubber for high-voltage DC cable accessories

Chen

Zhang

et al. 2020

J Mater Sci: Mater Electron

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“…Our previous study illustrated that samples without the oxygen annealing process generated an only 0.8 nm interfacial layer. 36,40 This gives evidence that the formation of the 1.2 nm thick undesirable interfacial layer is governed by the annealing process.…”

Section: Resultsmentioning

confidence: 89%

Two-bit memory and quantized storage phenomenon in conventional MOS structures with double-stacked Pt-NCs in an HfAlO matrix

Zhou

Liu

et al. 2016

Phys. Chem. Chem. Phys.

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A two-bit memory and quantized storage phenomenon are observed at room temperature for a device based on the traditional MOS structure with double-stacked Pt-nanocrystals (Pt-NCs). A 2.68 and 1.72 V flat band voltage shift (memory window) has been obtained when applying a ±7 V programming/erasing voltage to the structures with double-stacked Pt-NCs. The memory windows of 2.40 and 1.44 V can be retained after stress for 10(5) seconds, which correspond to 89.55% and 83.72% stored charges reserved. The quantized charge storage phenomenon characterized by current-voltage (J-V) hysteresis curves was detected at room temperature. The shrinkage of the memory window results from the decreasing tunneling probability, which strongly depends on the number of stacks. The traps, de-traps and quantum confinement effects of Pt-NCs may contribute to the improvement of dielectric characteristics and the two-bit memory behavior. The multi-bit memory and quantized storage behavior observed in the Pt-NCs stacks structure at room temperature might provide a feasible method for realizing the multi-bit storage in non-volatile flash memory devices.

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Improved dielectric properties of PVDF composites with Ag-deposited NBCTO hybrid particles

Su¹,

Chen²,

Feng³

2022

J Mater Sci: Mater Electron

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Silver-insertion induced improvements in dielectric characteristics of the Hf-based film

Cited by 8 publications

References 24 publications

Dielectric and space charge characteristics of nano-modified liquid silicone rubber for high-voltage DC cable accessories

Dielectric and space charge characteristics of nano-modified liquid silicone rubber for high-voltage DC cable accessories

Two-bit memory and quantized storage phenomenon in conventional MOS structures with double-stacked Pt-NCs in an HfAlO matrix

Improved dielectric properties of PVDF composites with Ag-deposited NBCTO hybrid particles

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