The effect of space charge on electrical conductivity of the structures Al-Si3N4-Al

Abstract The electrical conductivity of ZnO nanoparticle doped PVC polymer of different concentrations and thickness has been investigated as a function if applied electric field and temperature. The LnJ versus E1/2 plot for the pure sample shows transition field but for highly doped sample, the plot shows curvature for both low and high field, i.e., there is no transition field. This nonlinearity of the plot is due to space charge built up in the sample. The value of β is calculated from the slope of LnJ versus E1/2 plot and compared with the theoretical value. The result shows the Poole-Frenkel mechanism of conduction is operative.

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Electrical conductivity and space charge Cu2O

Journal of Physics and Chemistry of Solids ◽

10.1016/0022-3697(70)90015-6 ◽

1970 ◽

Vol 31 (9) ◽

pp. 2141-2145 ◽

Cited By ~ 5

Author(s):

J.P. Charles ◽

J.P. Fillard

Keyword(s):

Electrical Conductivity ◽

Space Charge

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Electrical conductivity in substances with space charge distribution

Soviet Physics Journal ◽

10.1007/bf00892645 ◽

1988 ◽

Vol 31 (4) ◽

pp. 324-327

Author(s):

V. M. Nitsovich ◽

I. V. Pronishin ◽

S. S. Skab

Keyword(s):

Electrical Conductivity ◽

Space Charge ◽

Charge Distribution ◽

Space Charge Distribution

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Electrical conductivity and space charge in LDPE containing TiO/sub 2/ nanoparticles

IEEE Transactions on Dielectrics and Electrical Insulation ◽

10.1109/tdei.2005.1511100 ◽

2005 ◽

Vol 12 (4) ◽

pp. 745-753 ◽

Cited By ~ 83

Author(s):

R.J. Fleming ◽

T. Pawlowski ◽

A. Ammala ◽

P.S. Casey ◽

K.A. Lawrence

Keyword(s):

Electrical Conductivity ◽

Space Charge

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Electrical conductivity of lithium tantalate thin film

Cerâmica ◽

10.1590/0366-69132020663792885 ◽

2020 ◽

Vol 66 (379) ◽

pp. 291-296

Author(s):

S. I. Gudkov ◽

A. V. Solnyshkin ◽

D. A. Kiselev ◽

A. N. Belov

Keyword(s):

Thin Film ◽

Electrical Conductivity ◽

Space Charge ◽

Rf Magnetron Sputtering ◽

Lithium Tantalate ◽

Film Structure ◽

Charge Carriers ◽

Transport Mechanisms ◽

Current Voltage ◽

Current Voltage Characteristics

Abstract The electrical conductivity of lithium tantalate thin film on the silicon substrate was studied. The film structure was prepared by RF magnetron sputtering. In general, the current-voltage characteristics were asymmetric and similar to that of a diode. The current-voltage characteristics had several sections associated with various transport mechanisms of current carriers. The main conductivity mechanism was related to the space-charge-limited current. The current-voltage characteristics showed that there was a mismatch between the forward and backward runs. One of the reasons for such behavior is a space charge accumulation due to charge carriers which were injected from the electrode and did not relax.

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Investigation of the Space Charge and DC Breakdown Behavior of XLPE/α-Al2O3 Nanocomposites

Materials ◽

10.3390/ma13061333 ◽

2020 ◽

Vol 13 (6) ◽

pp. 1333

Author(s):

Xiangjin Guo ◽

Zhaoliang Xing ◽

Shiyi Zhao ◽

Yingchao Cui ◽

Guochang Li ◽

...

Keyword(s):

Electrical Conductivity ◽

Space Charge ◽

Direct Current ◽

Breakdown Strength ◽

Charge Carrier Mobility ◽

Charge Accumulation ◽

Polyethylene Matrix ◽

Uniform Size ◽

Α Al2o3 ◽

Surface Modified

This paper describes the effects of α-Al2O3 nanosheets on the direct current voltage breakdown strength and space charge accumulation in crosslinked polyethylene/α-Al2O3 nanocomposites. The α-Al2O3 nanosheets with a uniform size and high aspect ratio were synthesized, surface-modified, and characterized. The α-Al2O3 nanosheets were uniformly distributed into a crosslinked polyethylene matrix by mechanical blending and hot-press crosslinking. Direct current breakdown testing, electrical conductivity tests, and measurements of space charge indicated that the addition of α-Al2O3 nanosheets introduced a large number of deep traps, blocked the charge injection, and decreased the charge carrier mobility, thereby significantly reducing the conductivity (from 3.25 × 10−13 S/m to 1.04 × 10−13 S/m), improving the direct current breakdown strength (from 220 to 320 kV/mm) and suppressing the space charge accumulation in the crosslinked polyethylene matrix. Besides, the results of direct current breakdown testing and electrical conductivity tests also showed that the surface modification of α-Al2O3 nanosheets effectively improved the direct current breakdown strength and reduced the conductivity of crosslinked polyethylene/α-Al2O3 nanocomposites.

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Space Charge Layers in Polycrystalline Cerium Oxide

MRS Proceedings ◽

10.1557/proc-756-ee4.2 ◽

2002 ◽

Vol 756 ◽

Cited By ~ 2

Author(s):

Andreas Tschöpe

Keyword(s):

Electrical Conductivity ◽

Space Charge ◽

Cerium Oxide ◽

Oxygen Deficiency ◽

Electronic Conductivity ◽

Electrical Potential ◽

Theoretical Models ◽

Excess Charge ◽

Two Phase ◽

Space Charge Model

ABSTRACTThe effect of space charge layers in polycrystalline cerium oxide was analyzed by comparing experimental results of grain size-dependent electrical conductivity with theoretical models. Modeling included the calculation of space charge segregation of acceptor ions and of the effective electrical conductivity of polycrystalline cerium oxide in both the macroscopic and mesoscopic range of grain sizes. It is shown that an L-3 power law for the electronic conductivity in the nm-regime is characteristic for the equilibrium space charge model and different from the scaling behavior of alternative models. The origin of space charge potential was investigated by numerical calculation of the electrical potential in a two-phase model. It was found, that a positive excess charge at grain boundaries of cerium oxide is caused by an enhanced oxygen deficiency at the grain boundary core. The influence of acceptor ion doping in the dilute limit and of non-equilibrium distribution of acceptor ions on electrical conductivity was also studied.

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