&lt;title&gt;Role of photoconductivity in molecularly doped photorefractive polymer&lt;/title&gt;

Goonesekera, Arosha; Liphardt, Martin; Ducharme, Stephen; Takacs, James M.; Zhang, Lei

doi:10.1117/12.217309

Cited by 8 publications

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“…The Gaussian energy width wϭ0.095Ϯ0.005 eV and Gaussian positional disorder parameter ⌺ϭ2.67Ϯ0.23 have been determined by extrapolating the high field data. 10 It is important to note here that the curves shown in Fig. 2 ͑cm/V͒ 1/2 found in a wide range of molecularly doped polymers.…”

Section: Resultsmentioning

confidence: 99%

“…The sample capacitance was 2.1 nF at 1 kHz. 10 The above data was used to determine the voltage across the polymer layer.…”

Section: Methodsmentioning

confidence: 99%

“…10 Several unique features revealed by this investigation 10 have led us to examine the data in greater detail in light of the Gaussian disorder model. In this new analysis we paid particular attention to the low-field mobility, which exhibits a temperature dependence in apparent disagreement with the predictions of the Gaussian disorder model and also with small polaron models.…”

Section: Introductionmentioning

confidence: 99%

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Low-field hole mobility in a photorefractive polymer

Goonesekera

Ducharme

Takacs

et al. 1997

The Journal of Chemical Physics

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Section: Resultsmentioning

confidence: 99%

“…The sample capacitance was 2.1 nF at 1 kHz. 10 The above data was used to determine the voltage across the polymer layer.…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Low-field hole mobility in a photorefractive polymer

Goonesekera

Ducharme

Takacs

et al. 1997

The Journal of Chemical Physics

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Hole trapping in molecularly doped polymers

Borsenberger

Gruenbaum

Magin

et al. 1999

J. Polym. Sci. B Polym. Phys.

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Hole mobilities have been measured in di‐p‐tolylphenylamine‐doped poly(styrene) containing 1‐phenyl‐3‐p‐diethylaminostyryl‐5‐p‐diethylamino‐phenylpyrazoline (DEASP), an 0.38 eV trap. For molar concentrations of less than a few multiples of 10−7, DEASP has no effect on the mobility. For concentrations in excess of 10−6, the mobility decreases with concentration as c−1.5. A concentration of 10−3 suppresses the trap‐free mobility by approximately 5 orders of magnitude. The results are described within the framework of a formalism due to Hoesterey–Letson and the recent simulations of Wolf et al. and Borsenberger et al. © 1999 John Wiley & Sons, Inc. J Polym Sci B: Polym Phys 37: 349–356, 1999

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Electron Trapping in Acceptor Doped Polymers

Borsenberger

Gruenbaum

Magin

et al. 1998

phys. stat. sol. (a)

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Eletron mobilities have been measured in N,N′‐bis(1,2‐dimethylpropyl)‐1,4,5,8‐naphthalenetetracarboxylic diimide (NTDI)‐doped poly(styrene) containing a series of acceptor traps with depths between 0.11 and 0.41 eV. The results are explained within the framework of a formalims based on disorder. The formalism is premised on the assumption that charge transport occurs by hopping through a manifold of localized states that are distributed in energy. The key parameter of the formalism is σ, the energy width of the hopping site manifold. The results are compared to recent simulations of Wolf et al. and Borsenberger et al., and show that the presence of a distribution of traps, off‐set from the intrinsic hopping manifold σ by an energy Et, does not change the basic phenomenology of hopping transport, as revealed by the field and temperature dependencies of the mobility or by the temporal features of the photocurrent transients. The effect of trapping can be quantitatively accounted for by the replacement of σ with an effective width σeff whose square increases linearly with the trap depth.

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<title>Role of photoconductivity in molecularly doped photorefractive polymer</title>

Cited by 8 publications

References 0 publications

Low-field hole mobility in a photorefractive polymer

Low-field hole mobility in a photorefractive polymer

Hole trapping in molecularly doped polymers

Electron Trapping in Acceptor Doped Polymers

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