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Blue Light Emitting Polyphenylene Dendrimers with Bipolar Charge Transport Moieties [PDF]

open access: yesMolecules, 2016
Two light-emitting polyphenylene dendrimers with both hole and electron transporting moieties were synthesized and characterized. Both molecules exhibited pure blue emission solely from the pyrene core and efficient surface-to-core energy transfers when ...
Guang Zhang   +7 more
doaj   +6 more sources

Polarity control of 2D semiconductor for reconfigurable electronics [PDF]

open access: yesMicrosystems & Nanoengineering
The controllable modulation of carrier polarity in semiconductors is essential for enabling dynamic configurations in reconfigurable devices. Ambipolar two-dimensional (2D) semiconductors, characterized by their atomic-scale thickness and excellent gate ...
Xiaoqian He   +12 more
doaj   +2 more sources

Modeling of space charge dynamics in polyethylene under AC stress based on bipolar charge transport model

open access: yesMaterials Research Express, 2020
Space charge dynamics under AC stress is of importance as a majority of high voltage cables are under AC stress, and space charge is the driving mechanism of dielectric degradation under these conditions.
Xinjing Cai   +3 more
doaj   +2 more sources

Modelling of Electroluminescence in Polymers Using a Bipolar Charge Transport Model

open access: yes, 2011
Electroluminescence (EL) in polymeric materials is thought to occur due to the energy dissipation process from the recombination of opposite polarity charge carriers.
Chen, G, Lewin, P L, Mills, D H, Zhao, J
core   +2 more sources

Modified Charge Transport Model Under High-Frequency Unipolar Square Wave Voltage

open access: yesFrontiers in Materials, 2022
As the main insulation material of the power electronic transformer (PET), polyimide (PI) is easy to accumulate space charge under the continuous high-frequency pulse voltage, which will threaten the operation of PET and cause electric field distortion ...
Jianxiang Xie   +4 more
doaj   +1 more source

Aggregation-Induced Intermolecular Charge Transfer Emission for Solution-Processable Bipolar Host Material via Adjusting the Length of Alkyl Chain

open access: yesMolecules, 2022
Molecules with donor–spacer–acceptor configuration have been developed rapidly given their peculiar properties. How to utilize intermolecular interactions and charge transfers for solution-processed organic light-emitting diodes (OLEDs) greatly relies on
Wei Jiang   +3 more
doaj   +1 more source

Temperature-dependent electrical transport, Hall effect, and Seebeck properties of bulk chemically reduced graphene oxide with bipolar charge carrier materials

open access: yesAIP Advances, 2023
The temperature-dependent electrical transport, Hall effect, and Seebeck properties of bulk-reduced graphene oxide (rGO) prepared by a chemical reduction process were investigated in a temperature range of 310–475 K. The bulk rGO contained bipolar charge
Keerati Maneesai   +6 more
doaj   +1 more source

Models of bipolar charge transport in polyethylene [PDF]

open access: yesJournal of Applied Physics, 2006
We introduce and develop two bipolar transport models which are based on appreciably different physical assumptions regarding the distribution function in the energy levels of trap states. In the first model, conduction is described by an effective mobility of the carriers and the accumulation of stored space charge is taken into account through a ...
Boufayed, F.   +6 more
openaire   +4 more sources

Improved space charge transport model in bi-layer dielectrics—considering carrier dynamic equilibrium

open access: yesHigh Voltage, 2020
The Maxwell–Wagner model and bipolar charge transport model both aim at describing the charge transport behaviours in dielectrics. The Maxwell–Wagner model performs well in calculating the polarisation current and electric field distribution, but it is ...
Hucheng Liang   +5 more
doaj   +1 more source

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