Results 251 to 260 of about 9,339 (291)

Joule Heating and Nonlinear Charge Transport in Bipolar Semiconductors

physica status solidi (b), 2022
Joule heating of a homogeneous bipolar semiconductor leads to the appearance of nonequilibrium spatially inhomogeneous current carriers. Both energetic and concentration nonequilibrium states arise. Temperature and concentration gradients at the boundaries always have opposite signs.
Brahim El Filali, Oleg Yu. Titov, Chetzyl Ballardo Rodriguez, Yuri G. Gurevich   +3 more
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A Bipolar Charge Transport Molecule

Japanese Journal of Applied Physics, 1996
Hole and electron mobilities have been measured in vapor deposited layers of N-(p-(di-p-tolylamino)phenyl)- N′-(1,2-dimethylpropyl)-1,4,5,8-naphthalenetetracarboxylic diimide (TAND). The TAND molecule contains a naphthalene diimide acceptor functionality and a triarylamine donor functionality.
B. J. Murray, J. E. Kaeding, W. T. Gruenbaum W. T. Gruenbaum, P. M. Borsenberger P. M. Borsenberger   +3 more
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Balancing charge-transporting characteristics in bipolar host materials

Thin Solid Films, 2020
Abstract Bipolar host materials with balanced charge transporting property were synthesized using a solvent-less green reaction method. The characteristics of these synthesized bipolar host materials were examined by thermal and spectroscopic analysis.
Kyu Sung Kim, Dong Uk Kim, Kuk Soung Joung, Jae-Woong Yu   +3 more
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A model for bipolar charge transport in insulators

Proceedings of 1995 IEEE 5th International Conference on Conduction and Breakdown in Solid Dielectrics, 2002
Failure of electrical cable insulation is still a major problem for the electricity generation and supply industries. Under high field conditions (>10/sup 8/ Vm/sup -1/), space charge and the concomitant electric field dynamics are involved in the initiation of dielectric breakdown.
J.M. Alison, R.M. Hill
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Evidence of bipolar charge transport in PTCDA

Solid State Communications, 2002
Transient photocurrent measurements were employed to investigate the electronic charge transport in thin layers of 3,4,9,10-perylenetetracarboxylic dianhydride deposited by high-vacuum evaporation onto In-covered Si(001) substrates. Measurements performed at two different bias polarities indicate that both holes and electrons are transported in the ...
Robert Hudej, Gvido Bratina
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Bipolar-charge-transporting organic photoconductors

Journal of Applied Physics, 1991
A new class of bipolar-charge-transporting molecularly-doped polymers has been developed. The materials are ternary solid solutions comprised of 3,5-dimethyl-3′,5′-di-tert-butyl-4,4′-diphenoquinone (MBDQ), N,N,N′,N′-tetrakis (m-methylphenyl)-1, 3-diaminobenzene (PDA), and poly(4,4′-cyclohexylidenediphenyl carbonate) (PC-Z).
Yasuhiro Yamaguchi, Takahiro Fujiyama, Masaaki Yokoyama   +2 more
openaire   +1 more source

Bipolar charge transport in an organic photorefractive composite

Applied Physics Letters, 2007
The authors report on tuning the near-infrared holographic recording speed in a poly(N-vinylcarbazole) based photorefractive composite by illuminating it at a wavelength of very strong absorption. Due to the small penetration depth of the light under these conditions this approach allows to flood the material with charge carriers from the side of the ...
Michael Salvador, Francisco Gallego-Gomez, Sebastian Köber, Klaus Meerholz   +3 more
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Bipolar charge transport and hologram fixing in KNbO3 crystals

Topical Meeting on Photorefractive Materials, Effects, and Devices II, 1990
The dark decay time of volume phase holograms recorded in photorefractive potassium niobate crystals mainly depends on the dark conductivity of the material. Self-erasure time constants between some microseconds and a few seconds are observed in general in KNbO3.
G. Montemezzani, P. Günter
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Space Charge and Transport of Nonequilibrium Carriers in Bipolar Semiconductors

2006 3rd International Conference on Electrical and Electronics Engineering, 2006
In this work we present results concerning the fundamental equations of charge carrier transport in semiconductor structures. We discuss a correct modeling of the recombination terms that do not violate the charge conservation law. We obtained that under stationary conditions and equal generation rates of electrons and holes the recombination rates of ...
Yu. Gurevich, J.e. Velazquez-Perez, O. Titov   +2 more
openaire   +1 more source

Simulation of bipolar charge transport in nanocomposite polymer films

Journal of Applied Physics, 2015
This paper describes 3D particle-in-cell simulation of bipolar charge injection and transport through nanocomposite film comprised of ferroelectric ceramic nanofillers in an amorphous polymer matrix. The classical electrical double layer (EDL) model for a monopolar core is extended (eEDL) to represent the nanofiller by replacing it with a dipolar core.
Meng H. Lean, Wei-Ping L. Chu
openaire   +1 more source