Results 31 to 40 of about 9,339 (291)
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 +4 more
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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
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Space charge behaviours in polyethylene under combined AC and DC electric fields
, 2014 Polyethylene has been one of the widely studied polymeric insulation materials. One of the major issues related to polymeric materials is the easy formation of space charge which may cause electric field enhancement. In this paper, a numerical simulation
C. Zhou +3 more
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Shanghai Jiaotong Daxue xuebaoThe 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
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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 +6 more
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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.
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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 +5 more
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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
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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 +3 more
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Advanced Functional Materials, EarlyView.This study demonstrates that memristors can replace conventional 2T–1C driving circuits with simplified 1T–1 m architectures by exploiting resistance switching. With ultra‐low switching voltages (< ±0.2 V) and multi‐level resistance states, the memristors precisely control the current injected into organic light‐emitting diodes (OLEDs).
Dong Hyun Kim +6 more
wiley +1 more source