Hopping Conduction in NiO

Snowden, D. P.; Saltsburg, Howard

doi:10.1103/physrevlett.14.497

Cited by 65 publications

(8 citation statements)

References 3 publications

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“…48,[65][66][67] Those small polarons conduct at temperatures above 100 K employing thermally activated polarons. 65,68,69 On the other hand, when O 2À ion transfers a 2p electron, a hole is formed in the 2p band of O 2À which creates a large polaron associated with lattice distortion. So, both polaronic hopping give rise to conductivity in NiO.…”

Section: Resultsmentioning

confidence: 99%

Large magnetodielectric effect and negative magnetoresistance in NiO nanoparticles at room temperature

Chatterjee

Maiti²,

Chakravorty

2020

RSC Adv.

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Section: Resultsmentioning

confidence: 99%

Large magnetodielectric effect and negative magnetoresistance in NiO nanoparticles at room temperature

Chatterjee

Maiti²,

Chakravorty

2020

RSC Adv.

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“…This increase in σac value helps the researchers to use these materials in various applications to have enhanced conductivity. At low frequency, the low value of σac is due to surface charge polarization whereas, at high frequency, high σac value is due to hopping phenomenon [32,33]. shown in Fig.…”

Section: Resultsmentioning

confidence: 94%

Conductivity Optimization of Mg, Zn and Ag doped TiO2 as Electron Transport Layer for Perovskite Solar Cell

Sharma

Soleimanioun

Rani

et al. 2021

Preprint

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We report on the modification of structural, optical, electrical and dielectric properties of the electron transport layer (ETL) of Perovskite solar cell (PSC) i.e. Titanium dioxide (TiO2) by adding Magnesium (Mg), Zinc (Zn) and Silver (Ag) impurities in it through Sol-gel method. Modified parameters are studied with the help of X-Ray diffraction (XRD), UV-Visible (UV-Vis) spectroscopy, electrical and dielectric measurements by two probe method respectively. Fascinating results have been obtained in modified Mg-TiO2, Zn-TiO2 and Ag-TiO2 such as enhanced transmittance (T), reduction in refractive index (n), extinction coefficient (k), Urbach energy (EU), an increase in DC conductivity, dielectric constant (ϵ) and AC conductivity. The conductivity in modified TiO2 follows the order Ag-TiO2 > Zn-TiO2 > Mg-TiO2 > TiO2. The prepared samples are utilized in PSC device fabrication and the increased efficiency following the same order as conductivity suggests the idea of doping in ETL successful in solar cell application.

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“…The AC conductivity of ZrTiO4 was found to be strongly depending on frequency. It has been reported that dispersion in the conductivity is a direct evidence for the hopping motions of charge carriers in neighboring lattice imperfections [20][21][22]. At low frequencies, conductivity is found to be very small flat peak supporting space charge polarization.…”

Section: Ac Conductivitymentioning

confidence: 97%

A Comparable Study of Structural, Dielectric and Humidity Sensing Properties of Solution Combustion Synthesized ZrO2 and ZrTiO4 Nano Powders

Madhusudhana¹,

Shobhadevi²,

Nagabhushana³

et al. 2018

JNST

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Simple and cost-effective solution combustion method is used to synthesize nano powders of ZrO2 and ZrTiO4. The structural and morphological analysis was done by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Results revealing the phase confirmation and structure of synthesized samples. Dielectric properties of the synthesized ZrTiO4 powder dominates the synthesized ZrO2 having superior dielectric constant (ɛʹ = 50), Low dielectric loss and enhanced conductivity (σac = 2.75 x 10 -4 Scm -1 ) at room temperature. The humidity sensing properties for ZrTiO4 shows good linear behavior compare to ZrO2.

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Hopping Conduction in NiO

Cited by 65 publications

References 3 publications

Large magnetodielectric effect and negative magnetoresistance in NiO nanoparticles at room temperature

Large magnetodielectric effect and negative magnetoresistance in NiO nanoparticles at room temperature

Conductivity Optimization of Mg, Zn and Ag doped TiO2 as Electron Transport Layer for Perovskite Solar Cell

A Comparable Study of Structural, Dielectric and Humidity Sensing Properties of Solution Combustion Synthesized ZrO2 and ZrTiO4 Nano Powders

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