Theory of Transient Space-Charge-Limited Currents in Solids in the Presence of Trapping

Many, A.; Rakavy, G.

doi:10.1103/physrev.126.1980

Cited by 653 publications

(147 citation statements)

References 10 publications

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“…12 Such shapes, especially the peak in current transient, are more generally characteristic of space-chargelimited current transients. 32 In our simulations, the initial current is higher when the initial charge density is large. Obtaining a decaying transient current is a matter of balance between charge injection and transport, a favorable situation being roughly strong injection associated with slow transit.…”

Section: B Resultsmentioning

confidence: 80%

Models of bipolar charge transport in polyethylene

Boufayed

Teyssèdre

Laurent

et al. 2006

Journal of Applied Physics

162

130

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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 single trapping level. In the second model the hypothesis of an exponential distribution function of trap depth is made, with conduction taking place via a hopping process from site to site. The results of simulations of the two models are compared with experimental data for the external current and the space-time evolution of the electrical space charge distribution. The two descriptions are evaluated in a critical way, and the prospects for these models to adequately describe real systems are given.

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Section: B Resultsmentioning

confidence: 80%

Models of bipolar charge transport in polyethylene

Boufayed

Teyssèdre

Laurent

et al. 2006

Journal of Applied Physics

162

130

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show abstract

“…Immobile minority carriers or a high intrinsic carrier density affect the relaxation time decreasing the internal electric field, and thus, t R is shorter for low-quality DDs (e.g., PC diamond sensors [20]). Charge dispersion has minor effect on t R , but it causes a round off of the signal drop after charge extraction [2].…”

Section: Transient Current Signalsmentioning

confidence: 99%

“…The system relaxes back to equilibrium in a time t R N t Tr , which is the time needed to expel all excess space-charge generated in the crystal [2]. Immobile minority carriers or a high intrinsic carrier density affect the relaxation time decreasing the internal electric field, and thus, t R is shorter for low-quality DDs (e.g., PC diamond sensors [20]).…”

Section: Transient Current Signalsmentioning

confidence: 99%

“…Instead of a homogeneous ionization profile through the whole diamond bulk, as provided by relativistic HIs, strongly absorbed UV light is used as injecting source, which decreases exponentially behind the blocking contacts. Furthermore, the theory [2][3][4] refers usually to pindiode structures, where single-carrier drift is assumed. If the case of dual-carrier drift is treated [3], significantly lower mobility of minority carriers is implemented, which is not correct for diamond [10].…”

Section: Transient Current Signalsmentioning

confidence: 99%

“…Original transient current (TC) signals, generated by primary 132 Xe projectiles of 215 MeV/amu kinetic energy in SC-DDs readout in 'current mode', are discussed in Section 4. An attempt is made to compare the experimental transients with theoretical SCLC data [2][3][4] as well as with simulated signals.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Ion spectroscopy — A diamond characterization tool

Berdermann

Caragheorgheopol²,

Ciobanu

et al. 2008

Diamond and Related Materials

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Injection, transport and recombination of charge carriers in organic light-emitting diodes

Bäßler

1998

Polym. Adv. Technol.

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Depending on the magnitude of the energy barrier for charge carrier injection from the electrode(s) the current flowing through a light‐emitting diode (LED) can be either space charge‐limited or injection‐limited. The first alternative, reflected in j(E) characteristics obeying Child’s law, requires the electrode to be ohmic. Various injection models are discussed, favoring a hopping description for the escape of a charge carrier from the image charge potential in an energetically disordered system. Information concerning the mobility of charge carriers can be inferred from time of flight studies, from space charge limited currents, as well as from transient absorption due to the momentary space charge stored inside the sample. A simple model, building on the proven validity of Langevin‐type electron hole recombination in organic solids, is able to explain the recombination yield in single‐layer LEDs as a function of the cell current. A more elaborate analytic theory is described for bilayer systems in which internal energy barriers give rise to charge accumulation and to a concomitant redistribution of the electric field. © 1998 John Wiley & Sons, Ltd.

show abstract

Theory of Transient Space-Charge-Limited Currents in Solids in the Presence of Trapping

Cited by 653 publications

References 10 publications

Models of bipolar charge transport in polyethylene

Models of bipolar charge transport in polyethylene

Ion spectroscopy — A diamond characterization tool

Injection, transport and recombination of charge carriers in organic light-emitting diodes

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