Synthesis, Characterization, and Enhanced Optical and Dielectric Properties of Pure and Ni-Doped ZnO Nanoparticles for Advanced Electronic Applications
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F25%3A10257600" target="_blank" >RIV/61989100:27360/25:10257600 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S2590123025009016" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2590123025009016</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.rineng.2025.104824" target="_blank" >10.1016/j.rineng.2025.104824</a>
Alternative languages
Result language
angličtina
Original language name
Synthesis, Characterization, and Enhanced Optical and Dielectric Properties of Pure and Ni-Doped ZnO Nanoparticles for Advanced Electronic Applications
Original language description
Nickel (Ni)-doped zinc oxide (ZnO) nanoparticles have garnered significant attention due to their tunable structural, optical, and electronic properties, making them ideal candidates for various advanced applications. This study focuses on the synthesis, characterization, and evaluation of the electrical and electronic properties of pure and Ni-doped ZnO nanoparticles (Ni:ZnO) synthesized via a co-precipitation method with varying Ni concentrations (2%, 4%, 6%, and 8%). X-ray diffraction analysis confirmed the wurtzite hexagonal structure of ZnO, with lattice distortion increasing proportionally to Ni doping. A secondary NiO phase was detected at higher doping levels, indicating the solubility limit of Ni in ZnO. The average crystallite size, calculated using Debye-Scherrer's equation, decreased from 31 nm in pure ZnO to 23 nm in 8% Ni-doped ZnO, confirming doping-induced size reduction. UV-visible spectroscopy revealed a blue shift in the optical bandgap from 3.23 eV for pure ZnO to 3.41 eV for 8% Ni-doped ZnO, attributed to Burstein-Moss effect. Fourier transform infrared spectroscopy identified changes in vibrational modes, with shifts in peaks corresponding to Zn-O and Ni-O bonds, indicating successful Ni incorporation. Scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy confirmed uniform particle morphology and elemental composition. Dielectric studies showed that the dielectric constant increased significantly with Ni doping, reaching a maximum value of 69 at 6% doping, while AC conductivity improved with frequency, demonstrating frequency-dependent conductivity due to hopping charge carriers. The findings reveal that Ni doping enhances the structural, optical, and dielectric properties of ZnO, making it suitable for optoelectronics, high-frequency devices, and dielectric materials.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20500 - Materials engineering
Result continuities
Project
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Continuities
O - Projekt operacniho programu
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Results in Engineering
ISSN
2590-1230
e-ISSN
2590-1230
Volume of the periodical
26
Issue of the periodical within the volume
104824
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
10
Pages from-to
nestránkováno
UT code for WoS article
001469790700001
EID of the result in the Scopus database
2-s2.0-105002007394