Hopping charge transport in conducting polymers studied by dc conduction and dielectric response analysis

1998 ◽  
Author(s):  
Simone Capaccioli ◽  
E. Butta ◽  
Silvia Corezzi ◽  
Mauro Lucchesi ◽  
Pierangelo A. Rolla
Keyword(s):  
Conducting Polymers ◽  
Charge Transport ◽  
Dielectric Response ◽  
Response Analysis

scholarly journals Temperature Distribution in the Insulation System of Condenser-Type HV Bushing—Its Effect on Dielectric Response in the Frequency Domain

Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 4016
Author(s):  
Krzysztof Walczak ◽  
Jaroslaw Gielniak
Keyword(s):  
Temperature Distribution ◽  
Working Conditions ◽  
Dielectric Response ◽  
Power Transformers ◽  
Response Analysis ◽  
Insulation System ◽  
Large Power ◽  
Catastrophic Failures ◽  
Significant Temperature ◽  
Specific Construction

HV bushings are an important part of the equipment of large power transformers, responsible for their many serious (including catastrophic) failures. Their proper exploitation needs to apply correct and reliable diagnostics, e.g., the use of dielectric response methods, that take into account their specific construction and working conditions. In this article, based on laboratory tests carried out on a real bushing, it has been shown that the significant temperature distribution within its core significantly affects the shape of the dielectric response of its insulation; therefore, the approach to its modeling should be changed. Hence, a new method for interpreting the results, using the so-called the 2XY model, is proposed. Subsequently, based on the measurements made on the insulators in operation, a new modeling method was verified. In conclusion, it can be stated that the 2XY model significantly improves the reliability of the dielectric response analysis, which should be confirmed in the future by tests on withdrawn and revised insulators.

A tied Fermi liquid to Luttinger liquid model for the explanation of nonlinear transport in conducting polymers

2020 ◽  
Author(s):  
Jiawei Wang ◽  
Jiebin Niu ◽  
Bin Shao ◽  
Guanhua YANG ◽  
Congyan Lu ◽  
...  
Keyword(s):  
Conducting Polymers ◽  
Charge Transport ◽  
Fermi Liquid ◽  
Fermi Liquids ◽  
Nonlinear Transport ◽  
Luttinger Liquids ◽  
Resistive Network ◽  
Light Emitting ◽  
Organic Conjugated Polymers ◽  
Liquid Model

Abstract Organic conjugated polymers demonstrate great potential in the transistor, solar cell and light-emitting diodes. The performances of those devices are fundamentally governed by charge transport within the active materials. However, the morphology-property relationships and the underpinning charge transport mechanism in polymers remain unclear. Particularly, whether the nonlinear charge transport in doped conducting polymers, i.e., anomalous non-Ohmic behaviors at low temperature, is appropriately formulated within non-Fermi liquid picture is not clear. In this work, via varying crystalline degrees of samples, we carried out systematic investigations on the charge transport nonlinearity in conducting polymers. Possible charge carriers’ dimensionality was discussed with experiments when varying the molecular chain’s crystalline orders. A heterogeneous-resistive-network (HRN) model was proposed based on the tied link between Fermi liquids (FL) and Luttinger liquids (LL), related to the high-ordered crystalline zones and weak-coupled amorphous regions, respectively. This mesoscopic HRN model is experimentally supported by precise electrical and microstructural characterizations, together with theoretic evaluations. Significantly, such model well describes the nonlinear transport behaviors in conducting polymers universally and provides new insights into the microstructure-correlated charge transport in organic conducting/semiconducting systems.

Charge transport in conducting polymers: insights from impedance spectroscopy

2009 ◽  
Vol 38 (12) ◽  
pp. 3339 ◽  
Author(s):  
Judith F. Rubinson ◽  
Yohani P. Kayinamura
Keyword(s):  
Impedance Spectroscopy ◽  
Conducting Polymers ◽  
Charge Transport

Charge Transport in Conducting Polymers: Polyacetylene Nanofibres

2004 ◽  
Vol 415 (1) ◽  
pp. 115-124 ◽  
Author(s):  
A. B. Kaiser∗ ◽  
S. A. Rogers ◽  
Y. W. Park
Keyword(s):  
Conducting Polymers ◽  
Charge Transport
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