Nonlinear behavior of the current–voltage characteristics for erbium-doped PVA polymeric composite films

2019 ◽  
Vol 125 (2) ◽  
Author(s):  
H. I. Elsaeedy ◽  
H. Elhosiny Ali ◽  
H. Algarni ◽  
I. S. Yahia
Keyword(s):  
Composite Films ◽  
Nonlinear Behavior ◽  
Polymeric Composite ◽  
Current Voltage ◽  
Erbium Doped ◽  
Current Voltage Characteristics

scholarly journals Светоизлучающие полевые транзисторы на основе композитных пленок полифлуорена и нанокристаллов CsPbBr-=SUB=-3-=/SUB=-

2019 ◽  
Vol 61 (2) ◽  
pp. 388
Author(s):  
А.Н. Алешин ◽  
И.П. Щербаков ◽  
Д.А. Кириленко ◽  
Л.Б. Матюшкин ◽  
В.А. Мошников
Keyword(s):  
Field Effect Transistors ◽  
Composite Films ◽  
Hole Mobility ◽  
Hole Transport ◽  
Component Ratio ◽  
Organic Field Effect Transistors ◽  
Electrical And Optical Properties ◽  
Light Emitting ◽  
Current Voltage ◽  
Current Voltage Characteristics

Abstract—Light-emitting organic field-effect transistors (LE-FETs) on the basis of composite films that consist of perovskite nanocrystals (CsPbBr_3) embedded in a matrix of conjugated polymer—polyfluorene (PFO)—have been obtained, and their electrical and optical properties have been investigated. Output and transfer current-voltage characteristics (I-Vs) of FETs based on PFO : CsPbBr_3 films (component ratio 1 : 1) have a slight hysteresis at temperatures of 100–300 K and are characteristic of hole transport. The hole mobility is ∼3.3 and ∼1.9 cm^2/(V s) at the modes of the saturation and low fields, respectively, at 250 K and reaches ∼5 cm^2/(V s) at 100 K. It has been shown that the application of pulsed voltage to LE-FETs based on PFO : CsPbBr_3 can reduce the ionic conductivity and provide electroluminescence in this structure at 300 K.

Effects of Additive Elements on Electrical Properties of Tantalum Oxide Films.

1995 ◽  
Vol 378 ◽  
Author(s):  
Hisayoshi Fujikawa ◽  
Yasunori Taga
Keyword(s):  
Electrical Properties ◽  
Conduction Mechanism ◽  
Defect Density ◽  
Tantalum Oxide ◽  
Composite Films ◽  
Current Voltage ◽  
Current Voltage Characteristics ◽  
Electrical Conduction Mechanisms ◽  
Insulating Properties ◽  
Nordheim Tunneling

AbstractTa2O5-based composite films prepared by magnetron sputtering have been investigated with respect to their dielectric properties. As additive third oxides, Y2O3 and WO3 were found to be effective in improving insulating properties without decreasing their dielectric constant. Furthermore, electrical properties of Ta2O5-Y2O3 films were investigated by measuring the current-voltage characteristics in the temperature range from 100 to 330 K. Measurement of temperature dependence of the leakage current revealed that the conduction mechanism at RT changed from the Poole-Frenkel type to the Fowler-Nordheim tunneling type by adding Y2O3 into Ta2O5. Based on the detailed analysis of the results, it is concluded that the addition of Y2O3 into the Ta2O5 film is effective in the reduction of defect density without high-temperature annealing and the alteration of electrical conduction mechanisms of the films.

scholarly journals Study of the Electrophysical Properties of Composite Varistors Based on Zinc Oxide and Polymer (Polyaniline)

2010 ◽  
Vol 2010 ◽  
pp. 1-5 ◽  
Author(s):  
Sajedeh Mohammadi Aref ◽  
Hassan Bidadi ◽  
Shamestan Hasanli
Keyword(s):  
Activation Energy ◽  
Zinc Oxide ◽  
Temperature Dependence ◽  
Experimental Work ◽  
Threshold Voltage ◽  
Nonlinear Behavior ◽  
Polymer Content ◽  
Electrophysical Properties ◽  
Current Voltage ◽  
Current Voltage Characteristics

In this experimental work, current-voltage characteristics of composite varisrors prepared on the base of zinc oxide with different weight percentages of polyaniline and temperature dependence of the samples characteristics have been studied. The activation energy of donor levels as well as the existence of hysteresis loop has been investigated. The comparison of experimental results shows that by increasing the polymer percentage in the varistor structure as long as the nonlinear behavior is conserved, the threshold voltage increases. This comparison also indicates that increasing the polymer content in the varistor structure causes the temperature dependence of threshold voltage to decrease. It is also concluded that, by the increase of polymer content in the varistor structure, the activation energy of donor levels and the hysteresis value are increased.

S-shaped current–voltage characteristics of polymer composite films containing graphene and graphene oxide particles

2016 ◽  
Vol 58 (12) ◽  
pp. 2567-2573 ◽  
Author(s):  
P. S. Krylov ◽  
A. S. Berestennikov ◽  
S. A. Fefelov ◽  
A. S. Komolov ◽  
A. N. Aleshin
Keyword(s):  
Graphene Oxide ◽  
Polymer Composite ◽  
Composite Films ◽  
Current Voltage ◽  
Oxide Particles ◽  
Current Voltage Characteristics

scholarly journals EFFECT OF CARBON NANOTUBES ON THE ELECTRICAL PROPERTIES OF THE POLYMERIC COMPOSITES

2019 ◽  
Vol 3 ◽  
pp. 45
Author(s):  
Sergey Gango ◽  
Konstantin Gusev ◽  
Evgeniy Ilin ◽  
Mikhail Predtechensky ◽  
Vladimir Solovyev ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Experimental Study ◽  
Electrical Properties ◽  
Polymeric Composite ◽  
Frequency Range ◽  
Ac Electrical Conductivity ◽  
Current Voltage ◽  
Temperature Dependences ◽  
Current Voltage Characteristics

Experimental study of single-wall carbon nabotubes (CNT) effect on the electrical properties of polymeric composite materials based on epoxy matrix has been carried out. Direct-current (DC) as well as alternating-current (AC) electrical conductivity of nanocomposites with different CNT concentrations have been investigated in the temperature interval from 293 K to 373 K. Measurements of Seebeck coefficient confirm n-type conductivity of composite with CNTs. Percolation threshold of the composite material under study has been estimated. It has been found that addition of single-wall CNT at low concentration causes hysteresis of current-voltage characteristics and the temperature dependences of electrical conductivity as well as its anisotropy in the samples under study. No noticeable frequency dependence of the AC electrical conductivity has been found in the frequency range from 100 Hz to 300 kHz.

scholarly journals Проводимость композитных пленок на основе проводящего полимера PEDOT : PSS, оксида графена и наночастиц TiO-=SUB=-2-=/SUB=- для контактных слоев перовскитных фотовольтаических структур

2019 ◽  
Vol 61 (4) ◽  
pp. 773
Author(s):  
А.А. Базанова ◽  
В.Н. Петров ◽  
А.Н. Алешин
Keyword(s):  
Titanium Dioxide Nanoparticles ◽  
Composite Films ◽  
Conductive Polymer ◽  
Charge Carriers ◽  
Globular Structure ◽  
Force Microscopy ◽  
Atomic Force ◽  
Current Voltage ◽  
Current Voltage Characteristics ◽  
Perovskite Photovoltaic

AbstractThe electrical properties of composite films based on conductive polymer PEDOT: PSS, graphene oxide (GO), and titanium dioxide nanoparticles (TiO_2) (PEDOT: PSS– TiO_2 and GO–TiO_2) used as contact layers of organic and perovskite photovoltaic structures have been studied. As a result of the study of morphology by atomic force microscopy, it was found that the PEDOT: PSS–TiO_2 and GO–TiO_2 films have a globular structure with a grain size of ~200–300 nm. The current–voltage characteristics of the PEDOT: PSS–TiO_2 and GO–TiO_2 films are measured in the temperature range of 80–300 K, the dependences of the resistivity versus temperature, ρ( T ), which have an activation character, are obtained. It is established that as the temperature decreases, the ρ( T ) dependences show a transition from large values of the activation energy (570 meV and 329 meV) to lower values (25 meV and 2.2 meV) for the PEDOT: PSS–TiO_2 and GO–TiO_2 films, respectively. The mechanisms of transport of charge carriers in the materials studied are discussed.

scholarly journals Polarity Independent Resistive Switching in MoS2 Nanosheets and PEO based Nanocomposite Films

2021 ◽  
Author(s):  
Rajesh Deb ◽  
Prashanta Pathak ◽  
SAUMYA RANJAN MOHAPATRA ◽  
Ujjal Das
Keyword(s):  
Resistive Switching ◽  
Indium Tin Oxide ◽  
Composite Films ◽  
Nanocomposite Films ◽  
Nano Composite ◽  
Current Voltage ◽  
Poly Ethylene Oxide ◽  
Resistance State ◽  
Current Voltage Characteristics ◽  
Poly Ethylene

Abstract Here, we report the exfoliation of bulk MoS 2 (molybdenum disulfide) into few layer nanosheets and then prepared nano-composite films with poly (ethylene oxide) (MoS 2 -PEO). We observed non-polar or polarity independent bistable resistive switching memory in two-terminal devices with Indium tin oxide (ITO) and aluminum (Al) as bottom and top electrode. In both bipolar and unipolar operations, it is observed that the biasing direction controls the current conduction mechanism. When positive bias is applied at the top Al electrode, the low resistance state (LRS) conduction is Ohmic type. But in opposite biasing condition, LRS conduction is space charge controlled. The current-voltage characteristics of the bipolar and unipolar switching are distinctly different in terms of their RESET process. In bipolar, the RESET process is very sharp whereas in unipolar operation it is staggered and step-wise.

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