Switching in organic polymer films

Henisch, H.K.; Smith, W. R.

doi:10.1063/1.1655065

Cited by 93 publications

(41 citation statements)

References 14 publications

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“…Figure 7͑b͒ shows the equivalent circuit model of an N-layer memcapacitor. Another interesting model extension can be achieved if a memristive material is used ͑e.g., VO 2 films 5 or an organic memristive material [25][26][27][28] ͒ instead of the usual dielectric between the internal layers. Then, in the equivalent circuit model, the role of nonlinear resistors will be played by memristors.…”

Section: Equivalent Circuit Modelmentioning

confidence: 99%

Solid-state memcapacitive system with negative and diverging capacitance

2010

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We suggest a possible realization of a solid-state memory capacitive ͑memcapacitive͒ system. Our approach relies on the slow polarization rate of a medium between plates of a regular capacitor. To achieve this goal, we consider a multilayer structure embedded in a capacitor. The multilayer structure is formed by metallic layers separated by an insulator so that nonlinear electronic transport ͑tunneling͒ between the layers can occur. The suggested memcapacitor shows hysteretic charge-voltage and capacitance-voltage curves, and both negative and diverging capacitance within certain ranges of the field. This proposal can be easily realized experimentally and indicates the possibility of information storage in memcapacitive systems.

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Section: Equivalent Circuit Modelmentioning

confidence: 99%

Solid-state memcapacitive system with negative and diverging capacitance

2010

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“…In this case the memory effect is attributed to electric field-induced charge transfer between the metal nanoparticles and the small organic molecules. Segui et al (1976) and Henish & Smith (1974) suggested that the switching mechanism (i.e. between the two conductivity states) in their devices is due to the formation of conductive filaments between the top and bottom metal electrodes.…”

Section: Introductionmentioning

confidence: 99%

Electrical bistability in a composite of polymer and barium titanate nanoparticles

Salaoru

Paul

2009

Phil. Trans. R. Soc. A.

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Growth in the use of organic materials in the fabrication of electronic devices is on the rise. Recently, some attempts have been undertaken to manufacture polymer memory devices. Such devices are fabricated by depositing a blend (an admixture of organic polymer, small organic molecules and nanoparticles) between two metal electrodes. These devices show two electrical conductivity states ('high' and 'low') when a voltage is applied, thus rendering the structures suitable for data retention. In this paper, we describe an attempt to fabricate memory devices using ferroelectric nanoparticles embedded in an organic polymer. This paper also discusses issues related to the observed memory effect.

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“…The PVCz doped with 12 was used as a switching sample. TheN, value for the doped PVCz calculated from the observed V,h using equation V,h = ed 2 …”

Section: Resultsmentioning

confidence: 99%

Switching in Poly-N-vinylcarbazole Thin Films Effect of Molecular Weight and Impurities

Sakai

Sadaoka

Okada

1983

Polym J

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ABSTRACT:In order to elucidate the trapping sites which serve an important role in the switching of poly-N-vinylcarbazole (PVCz), the effects of the molecular weight and the method of polymerization on the threshold voltage of switching was studied. The trap density was also determined from the threshold voltage. Polymerization was initiated by ()(,1)('-azobisisobutyronitrile (AIBN) or y-ray irradiation. The trap density was larger for lower molecular weight PVCz than for higher molecular weight materials. PVCz prepared by AIBN initiator had a trap density larger than that made by y-ray initiation when both polymers had the same molecular weight. Doping of iodine onto PVCz increased the trap density; however, doping of tetramethyl-p-phenylenediamine or 1,5-diaminonaphthalene had no such effect. Heat treatment ofPVCz seemed to have some effect on the switching characteristics.KEY WORDS Poly-N-vinylcarbazole

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Switching in organic polymer films

Cited by 93 publications

References 14 publications

Solid-state memcapacitive system with negative and diverging capacitance

Solid-state memcapacitive system with negative and diverging capacitance

Electrical bistability in a composite of polymer and barium titanate nanoparticles

Switching in Poly-N-vinylcarbazole Thin Films Effect of Molecular Weight and Impurities

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