Results 31 to 40 of about 3,382,432 (137)

Robust Bipolar Light Emission and Charge Transport in Symmetric Molecular Junctions

Journal of the American Chemical Society, 2017
Molecular junctions consisting of a Ru(bpy)3 oligomer between conducting carbon contacts exhibit an exponential dependence of junction current on molecular layer thickness (d) similar to that observed for other aromatic devices when d < 4 nm. However, when d > 4 nm, a change in transport mechanism occurs which coincides with light emission in the range
Ushula M. Tefashe, Quyen Van Nguyen, Frederic Lafolet, Jean-Christophe Lacroix, Richard L. McCreery   +4 more
openaire   +4 more sources

Simulation research on space charge characteristics of zinc oxide varistor

Energy Reports, 2020
Zinc oxide (ZnO) lightning arresters have good protection performance and have been widely used in power systems. ZnO varistor is the core component of the arrester, and its electrical performance determines the overvoltage protection level of the ...
Qian Wang, Ruonan Zhang, Chenjie Ji
doaj   +1 more source

Nonlinear charge transport in bipolar semiconductors due to electron heating [PDF]

Physics Letters A, 2016
It is known that when strong electric field is applied to a semiconductor sample, the current voltage characteristic deviates from the linear response. In this letter, we propose a new point of view of nonlinearity in semiconductors which is associated with the electron temperature dependence on the recombination rate.
Molina-Valdovinos, S., Gurevich, Yu. G.
openaire   +2 more sources

Transport phenomena in bipolar semiconductors: a new point of view [PDF]

, 2005
In previous work it has been shown that the traditional approach to transport phenomena in bipolar semiconductors is inconsistent. In particular, the effect of non-equilibrium charge carriers and appropriate boundary conditions are not considered in the ...
Ortiza, A., Giraldod, J., Gutie´rrezd, A., Volovichevc, I.N., Logvinovb, G.N., Titova, O.Yu., Gurevicha, Yu.G.   +6 more
core   +1 more source

Characteristics of Surface Charge Accumulation on Direct Current GIL Insulators Under Different Dominant Mechanisms Considering Surface Trapping Effect

Shanghai Jiaotong Daxue xuebao
The existing mathematical models for charge accumulation at the gas-solid interface can hardly illustrate some microscopic mechanisms, which need improvement.
WANG Yaogang, WANG Zheming, LI Ke, JIA Bowen, YANG Hua, YAN Wu, LU Wu
doaj   +1 more source

Space Charge Measurement and Modelling in Cross-Linked Polyethylene

Energies, 2020
Cross-linked polyethylene, commercially known as XLPE, is widely used as an insulating material in high voltage cables. However, space charge accumulation under the DC field is one of the most challenging problems in the further development of XLPE ...
Yunpeng Zhan, George Chen, Miao Hao, Lu Pu, Xuefeng Zhao, Sen Wang, Jian Liu   +6 more
doaj   +1 more source

Effect of XLPE/EPDM Interface on Space Charge Behavior in Cable Accessory

IEEE Access, 2019
Space charges accumulate easily at insulation interface of cable accessories, which cause different electric field distribution and aging characteristics compared to single-layered cable.
Mingxiao Zhu, Ying Gao, Jiming Chen, Jiacai Li, Qianyu Yu, Chaolin Li   +5 more
doaj   +1 more source

Influence of Polarity Reversal Period and Temperature Gradient on Space Charge Evolution and Electric Field Distribution in HVDC Extruded Cable

Energies, 2022
During the operation of HVDC extruded cables, voltage polarity reversal (VPR) is considered one of the most severe conditions for cable insulation.
Yifan Zhou, Bo Gao, Wei Wang, Ke Song
doaj   +1 more source

Space Charge Accumulation at Material Interfaces in HVDC Cable Insulation Part I—Experimental Study and Charge Injection Hypothesis

Energies, 2020
On-site installation of accessories on extruded polymeric high voltage cables in a common practice. The procedure requires the shaping of the physical interface between the cable insulation surface and the pre-molded accessory body.
Espen Doedens, E. Markus Jarvid, Raphaël Guffond, Yuriy V. Serdyuk   +3 more
doaj   +1 more source

Correspondence of the sign change in organic magnetoresistance with the onset of bipolar charge transport [PDF]

, 2008
In this work we examine the transition between positive and negative organic magnetoresistance in poly[2-methoxy-5-(3', 7' -dimethyloctyloxy)- p -phenylenevinylene] in order to understand how different regimes of charge transport affect the organic ...
Bloom, F.L., Wagemans, W., Koopmans, B., W. Wagemans, F. L. Bloom, Bloom, F. L.,, Wagemans, W.,, Kemerink, M.,, Kemerink, M., M. Kemerink, B. Koopmans, Koopmans, B.,   +11 more
core   +1 more source