Effects of Chromium Doping on the Electrical Properties of ZnO Nanoparticles

Abstract

Nanostructured ZnO has gained a considerable amount of attention due to its unique physical and chemical properties and due to its remarkable performance in the fields of optics, photonics and electronics. The scope of this work is to study the Structural, Optical and Electronic properties of Pure Zinc Oxide (ZnO) and Chromium doped Zinc Oxide nanoparticles. These nanoparticles were synthesized by low-temperature precipitation method at various concentrations in the range (Zn1-xCrxO; (x = 0, 0.1& 0.3)). The precursors used were analytical grade Zinc Nitrate Hexahydrate and Chromium Nitrate Nona hydrate. The synthesized nanoparticles were annealed at 400°C. The Structural property of the synthesized nanoparticles was analysed by XRD (X-Ray diffraction) and was confirmed to exhibit a crystalline hexagonal wurtzite structure with an average crystallite size of 55nm. The functional groups were analysed using FTIR (Fourier Transformed Infra-red spectroscopy). The Morphology was analysed by FESEM (Field Emission Scanning Electron Microscope) and a change in morphology from spherical to spindle like structure was observed. The Optical properties were analysed using UV-Vis spectroscopy, the absorption spectrum for electromagnetic spectrum was observed and the changes in the optical band gap of ZnO nanoparticles with Chromium dopant addition were calculated to be in the range of 3.6 eV. The Electrical property of the synthesised nanoparticles was analysed using Electrochemical Impedance Spectroscopy (EIS) and the conductivity was calculated to be in the range of 1.1e-07S/m.

Chemical process of synthesizing zinc oxide (ZnO) with nanorod and spherical morphologies

“…Zinc oxide (ZnO) is an important material for applications in catalytic luminescent and electronic (e.g., varistors, semiconductors, and gas sensors) devices, pigments, rubber, ceramics, chemical and components for the pharmaceutical and cosmetic industries [1][2][3][4]. Additionally, ZnO nanostructures were used as nanoadsorbent to remove heavy metals that the removal efficiency depends on the shapes of ZnO nanoparticles [5,6].…”

The ordinary negative changing refractive index for estimation of optical confinement factor

“…Assuming the process is flawless. Some developers use a variety of methods to detect defects resulting from manufacturing errors, such as automatic visual inspection (Priscilla et al, 2020).…”

“…In the integrated metal-diffused, the optical waveguides own a weak optical confinement factor that restricts an electro-optic exchange as a result of the lower efficiency of an electro-optic modulation and large footprints of devices (Priscilla et al, 2020). Lately, a larger optical confinement factor (big overlap) has been achieved using a uniform thin-film LN modulator integration that leads to enhancements in terms of compactness, information measure, and energy potency.…”

“…This interesting technique has attracted multiple studies presented in (Tavlykaev and Ramaswamy, 1999;Zenin et al, 2012;Zenin et al, 2017Alexander et al, 2018DeVault et al, 2018;Deshpande et al, 2018;Thomaschewski et al, 2020). However, for commercial demand, the length of the branches is still relatively long within the limit of mm-scale, because the extraction is limited within an overlap of an electro-optic field (Priscilla et al, 2020). Moreover, a photonic crystal PC (crystal is a type of a barium titanate BaTiO 3 ) can be used as a confined device for optical light and utilized with LN-Si devices.…”

Towards a Uncertainty Analysis in Thermal Protection using Phase-change Micro/Nano Particles during Hyperthermia

“…The electromagnetic field can itself, causes cancer depending on how they are produced [9] or improve body behavior [10]. Also, the nanoparticles should not have a toxic effect on the body [11,12]. Cobalt ferrite (CoFe2O4) is one of these nanoparticle that can be used in hyperthermia [13].…”