Simulation of the electrical properties of polycrystalline ceramic semiconductors with submicrometer grain sizes

Rozhanskii, I. V.; Zakheim, D. A.

doi:10.1134/1.1923568

Cited by 9 publications

(3 citation statements)

References 16 publications

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“…In accordance with [26] photosensitivity S of 1-D ZnO arrays and Ag/ZnO nanocomposites was calculated as ratio of the photocurrent Ip under UV to dark current Id, which were measured at 1 V. To confirm stable work of test samples multiple "on-off" switching of UV irradiation was used. Similar to [5,8], the measurement of C-U characteristics of 1-D ZnO arrays and Ag/ZnO nanocomposites was performed using a "Measurer L, C, R digital E7-12" at a frequency of 1 MHz and an amplitude of the measurement voltage 0.03 V. The measured C-U characteristics were analyzed as was proposed in [27] and used in [5,8,[28][29]. Fig.…”

Section: Methodsmentioning

confidence: 99%

Nanostructured ZnO Arrays Fabricated via Pulsed Electrodeposition and Coated with Ag Nanoparticles for Ultraviolet Photosensors

Klochko¹,

Klepikova²,

Petrushenko³

et al. 2018

J. Nano- Electron. Phys.

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Nanostructured one-dimensional (1-D) ZnO arrays fabricated via pulsed electrodeposition and coated with Ag nanoparticles are researched with the aim of their using in the ultraviolet (UV) photosensors. The results of the crystal structure investigations showed that the pulsed electrodeposited zinc oxide arrays are polycrystalline in nature and matching with hexagonal wurtzite modification of ZnO. To enhance its UV photosensitivity, the silver nanoparticles (AgNPs) with different shape and an average size of 60 nm, as well as 300-500 nm long Ag nanorods with ~30 nm diameter, are precipitated mainly on the (002), (101) and (100) ZnO planes. Study of electrical properties and electronic parameters of the 1-D ZnO and Ag/ZnO nanocomposites using a current-voltage and capacity-voltage characteristics identified the important role of the high double Schottky barriers at the ZnO intergrain boundaries for the creation of great UV photosensitivity. It is proved that through monitoring the amount of AgNPs on the ZnO surface the electrical properties and electronic parameters of the Ag/ZnO nanocomposites, and consequently, the output parameters of the UV photosensors can be controlled.

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Section: Methodsmentioning

confidence: 99%

Nanostructured ZnO Arrays Fabricated via Pulsed Electrodeposition and Coated with Ag Nanoparticles for Ultraviolet Photosensors

Klochko¹,

Klepikova²,

Petrushenko³

et al. 2018

J. Nano- Electron. Phys.

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“…There are theoretical and experimental works con cerned with the study of the mechanisms of electrical conduction of nanoheterogeneous structures (see, for example, [4][5][6][7][8]). However, the electrical properties of "point" contacts (with sizes of the order of 1 nm) between spherical nanoparticles and planar metal electrodes have not been investigated.…”

Section: Introductionmentioning

confidence: 99%

Electrical properties of the metal-insulator nanoparticles-metal structure

Харламов¹,

Korostelev²,

Bogoraz³

et al. 2012

Phys. Solid State

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The electrical properties of the metal-insulator-metal (MIM) structure with a monolayer of Al 2 O 3 or ZrO 2 spherical nanoparticles as an insulator have been investigated. It has been experimentally found that the MIM structure can be in a weakly conducting or highly conducting state, depending on the applied voltage. A phenomenon has been revealed that the differential resistance of the MIM structure is neg ative and approaches zero (reversibly) with an increase in the electric current. After treatment of the MIM structure in the medium of atomic oxygen or atomic hydrogen, the electrical conductivity of the structure increases and depends on the polarity of the applied voltage. It has been established that the differential resis tance of the structure in the form of a monolayer of nickel and copper spherical nanoparticles located between the planar metal electrodes is positive and decreases with an increase in the applied voltage.

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“…A more adequate approach to the simulation of the structure based on the Voronoi grid has also been suggested [8,9]. Rozhanski et al calculated a two-dimensional system using the Voronoi grid method [10]. However, both in regular models and in the Voronoi grid models, the grain boundaries are considered as surface states congregated with electron traps.…”

Section: Introductionmentioning

confidence: 99%

Simulation of the Electrical Properties of Semiconductive BaTiO<sub>3</sub> Ceramic Varistors Using Continuum Theory

Fang

Chen

2014

AMR

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A continuum field model describing the electrical characteristics of polycrystalline semiconductors ceramics is suggested. Taking into account the continuum theory, a static differential equation about electron level on the base of Poisson equation is established. The one-dimensional quantitative calculation is carried out using the Runge-Kutta method. The results show that as the applied voltage increases, the grain boundary barrier in the nonlinear zone drop drastically. The nonlinear characteristics of high temperature paraelectric phase is larger than that of room temperature ferroelectric phase.

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Simulation of the electrical properties of polycrystalline ceramic semiconductors with submicrometer grain sizes

Cited by 9 publications

References 16 publications

Nanostructured ZnO Arrays Fabricated via Pulsed Electrodeposition and Coated with Ag Nanoparticles for Ultraviolet Photosensors

Nanostructured ZnO Arrays Fabricated via Pulsed Electrodeposition and Coated with Ag Nanoparticles for Ultraviolet Photosensors

Electrical properties of the metal-insulator nanoparticles-metal structure

Simulation of the Electrical Properties of Semiconductive BaTiO<sub>3</sub> Ceramic Varistors Using Continuum Theory

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