Anomalously high conductivity along the interface of two dielectric polymers

Gadiev, R. M.; Лачинов, А. Н.; Kornilov, V. M.; Салихов, Р. Б.; Rakhmeev, R. G.; Yusupov, A. R.

doi:10.1134/s0021364009230088

Cited by 11 publications

(7 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It was earlier shown in [11] that the interface between two dielectric polymer layers features anoma lously high longitudinal conductivity and CC mobility. A clear interface between polymer films, metallic con ductivity type, and presence of field effect allowed assuming the presence of a quasi two-dimensional electron gas at the interfaces of polymer dielectric layers [11].…”

Section: Resultsmentioning

confidence: 98%

“…A clear interface between polymer films, metallic con ductivity type, and presence of field effect allowed assuming the presence of a quasi two-dimensional electron gas at the interfaces of polymer dielectric layers [11]. In this connection, the polymer film including the polymer/polymer interfaces can be considered as a multilayer structure of the metal/poly mer//"metal"/…/polymer/metal type.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Effect of interface in bilayer polydiphenylenephthalide film on electron transport

et al. 2012

Self Cite

View full text Add to dashboard Cite

The results of studies of multilayer film structures based on a wide-gap polymer using the time of flight technique are shown. Experimental data showed that transport of charge carriers depends strongly on the presence of a polymer/polymer interface. The possibility is shown of increasing the threshold thickness of the experimental structure, in which effects of switching to a highly conducting state induced by uniaxial mechanical pressure are also found. Preliminary interpretation of the obtained data is performed.

show abstract

Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

Effect of interface in bilayer polydiphenylenephthalide film on electron transport

et al. 2012

Self Cite

View full text Add to dashboard Cite

show abstract

“…In addition, the choice of PDPh was due to the PDPh/PDPh boundary having a new type of collective electronic state, namely a Q2DEG. This was first discovered for non-conjugate polymers [ 17 ].…”

Section: Methodsmentioning

confidence: 99%

“…Previously, it was experimentally shown that a layer with a Q2DEG could be formed along the interface of PDPh films [ 17 ]. A two-dimensional area was formed at the interface of two polymer films by sequentially applying them to each other.…”

Section: Methodsmentioning

confidence: 99%

Non-Conjugated Poly(Diphenylene Phthalide)—New Electroactive Material

Karamov,

Galiev,

Lachinov

et al. 2023

Polymers

View full text Add to dashboard Cite

In organic electronics, conjugated conductive polymers are most widely used. The scope of their application is currently very wide. Non-conjugated polymers are used much less in electronics and are usually used as insulation materials or materials for capacitors. However, the potential of non-conjugated polymers is much wider, due to the fact that new electronic materials with unique electronic properties can be created on the basis of non-conjugated polymers, as well as other inorganic dielectrics. This article demonstrates the possibilities of creating electrically conductive materials with unique electronic parameters based on non-conjugated polymers. The results of the study of the sensory properties of humidity are given as examples of the practical application of the structure. The abnormal electronic properties are realized along the interface of two polymer dielectrics with functional polar groups. The submicron films of polydiphenylenephthalide were used as a dielectric. It is shown that a quasi-two-dimensional electronic structure with abnormally large values of conductivity and mobility of charge carriers occurs along the interface. These structures are often called quasi-two-dimensional electron gas (Q2DEG). This article describes the manufacturing processes of multielectrode devices. Polymer films are deposited via the spin-coating method with polymer solutions in cyclohexanone. The metal electrodes were manufactured through thermal deposition in a vacuum. Three types of metal electrodes made of aluminum, copper and chromium were used. The influence of the electron work function of contacting metals on the electronic parameters of the structure was studied. It was established that the work function decrease leads to an increase in the conductivity and mobility of charge carriers. The charge carrier parameters were estimated based on the analysis of the current-voltage characteristics within the space-charge-limited current technique. The Richardson-Schottky thermionic emission model was used to evaluate values a potential barrier at metal/organic interfaces. It was established that the change in ambient humidity strongly affects the electronic transport properties along the polymer/polymer interface. It is demonstrated that the increase in conductivity with an increase in humidity occurs due to an increase in the mobility of charge carriers and a decrease in the height of the potential barrier at the three-dimensional metal contact with two-dimensional polymer interface. The potential barrier between the electrode and the bulk of the polymer film is significantly higher than between the electrode and the quasi-two-dimensional polymer structure.

show abstract

“…This paper presents the results of further investigation of the charge transport along the boundary of two organic layers of PDP (Gadiev et al, 2010;. It was expected that the bending of energy levels in this region must lead to increased local charge concentration and, hence, modify the transport properties of the 2D structure under consideration.…”

Section: Conducting Polymer/polymer Interfacementioning

confidence: 99%