Varistor effect in highly heterogeneous polymer–ZnO systems

Kurbanov, M. A.; Ramazanova, I. S.; Dadashov, Z. A.; Faradzhzade, I. A.

doi:10.1134/s1063782617070223

Cited by 7 publications

(4 citation statements)

References 7 publications

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“…In the range 300 -390 K, ionic conductivity with the participation of Zni 5.6 10 -11 Ohm -1 cm -1 with Ea = 0.473 eV is switched on (Table III) and the maximum intensity of electroluminescence (EL) is reached at 72 V [23]. Accordingly, Ne decreases to 4.610 15 cm -3 at 300 K (Table 2). Fig.…”

Section: Resultsmentioning

confidence: 98%

“…Irradiation with gamma quanta led to a decrease in the range of rectifying voltages from -60 +45 V with a blocking voltage to  36 V, where at 42 V an EL appears, depending on the polarity [24]. According to the literature data, composite ZnO varistors have a high electric breakdown field strength in the range from 20 to 150 V [15], and in our case the ZnSe(Te)/ZnO:O NHJ had a value of 80 V, and after irradiation of 40 V.…”

Section: Resultsmentioning

confidence: 99%

“…Concentrations of free charge carriers in ZnSe (Te) with thermodynamically stable lowmobile complexes VZnТеSe are in the range of ~ (1.2-1.6) 10 17 cm -3 [3]. It has been shown that with a decrease in the size of ZnO particles within the limits of 63 -315 µm, the response voltage of the I-V characteristic of the composite varistor increases from 20 to 150 V [15]. Isotropic heterostructures n-GaР-n + -(ZnSe)1-x-y(Si2)x(GaР)y (0x0.03, 0y0.09) have rectifying properties in the voltage range -20+ 15 V [16].…”

Section: Introductionmentioning

confidence: 99%

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Photoconductivity of gamma-irradiated Znse (Te)/ZnO:O and ZnSe(Te)/ZnO:O,Zn nanogeterojuctions

et al. 2023

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Possibility of enhancing the photoconductivity of ZnSe (0.2%Те)/ZnO:O nanoheterojunction was investigated under effect of thermo-treatment in zinc vapor followed by 60Сo gamma-irradiation in air to the dose of 106 Gy by means of generation of impurity-defect complexes. The obtained ZnSe (0.2%Te)/ZnO:O,Zn nanoheterojunction had an electron conductivity with the activation energy 0.33 eV that is caused by thermo-stimulated transfer of charge carriers on the stable resonance level Γ6v= 5.76 eV in the conducting band. The significant photoconductivity growth from 10-10 to 10-5 Ω-1 was achieved at 300 K, and also a broad band (480-1100 nm) light scattering at free carriers occurred due to formation of additional stable associates (OSe0TeSe0VZn-), (OSe0VZn-)- or (OSe0VZnMeZnIIIZni) at the interface between the matrix crystal p-ZnSe(0.2%Te):O,Zn and nanocrystallite n-ZnO of 40 nm size, where amorphous phase layer of 1.2 nm was also grown.

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Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Photoconductivity of gamma-irradiated Znse (Te)/ZnO:O and ZnSe(Te)/ZnO:O,Zn nanogeterojuctions

et al. 2023

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“…If there are no impurity ions, these conductive electrons mainly come from the ionization of interstitial zinc atoms, which presents the atomic electron conduction characteristics of nano ZnO. When metal oxide impurities are introduced into zinc oxide, these metal ions act as donors or acceptors (which is different from the type of zinc oxide that forms solid solution and metal ions) and the conductivity of zinc oxide is greatly different [11,12].…”

Section: Application Of Nano Zno Varistorsmentioning

confidence: 99%

Simulation of the Conductive Process of Nano ZnO Varistors Based on Animation Plane Form

Liu

2020

Journal of Chemistry

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Among many nano materials and chemical materials, zinc oxide nanomaterials have attracted researchers’ interest because of their high efficiency, low cost, easy preparation, and variable morphology. The purpose of this study is to explore the fabrication and conductive process of nano ZnO varistors under the simulation of an animation plane form. In this study, the chemical vapor deposition method was used to prepare nano ZnO. Then, ZnO nanomaterials were mixed with deionized water to form a suspension. Under the action of a micromechanical stirrer, impurities were removed by heat treatment, and then different amount of water was added to obtain a nano ZnO electrode. The conductive process and electrochemical properties of the nano ZnO electrode were investigated and analyzed. The results show that the pressure ratio of the varistor increases obviously after adding nano ZnO. In the range of 0–30%, the pressure ratio of the ZnO varistor increases with the increase in nano ZnO content. When w (nano ZnO) is 30%, the voltage ratio reaches 1.149 and the oxidation peak current ratio of LD decreases by 6%. Therefore, it is concluded that the electrode of nano ZnO varistor valve sheets maintains good stability for a LD conductivity detection process. It also plays an important role in electrochemical research.

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Influence of SrCO3‐doping on the microstructure and electrical properties of ZnO–(Bi2O3/Sb2O3) varistor ceramics

Kharchouche

Zebar

2023

J Mater Sci: Mater Electron

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Varistor effect in highly heterogeneous polymer–ZnO systems

Cited by 7 publications

References 7 publications

Photoconductivity of gamma-irradiated Znse (Te)/ZnO:O and ZnSe(Te)/ZnO:O,Zn nanogeterojuctions

Photoconductivity of gamma-irradiated Znse (Te)/ZnO:O and ZnSe(Te)/ZnO:O,Zn nanogeterojuctions

Simulation of the Conductive Process of Nano ZnO Varistors Based on Animation Plane Form

Influence of SrCO3‐doping on the microstructure and electrical properties of ZnO–(Bi2O3/Sb2O3) varistor ceramics

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