Interface study of hybrid CuO nanoparticles embedded ZnO nanowires heterojunction synthesized by controlled vapor deposition approach for optoelectronic devices

Khan, Muhammad Arif; Nayan, Nafarizal; Ahmad, Mohd Khairul; Soon, Chin Fhong; Ali, Mohamed Sultan Mohamed; Mustafa, Mohd Kamarulzaki; Tahir, Muhammad Bilal

doi:10.1016/j.optmat.2021.111132

Cited by 19 publications

(10 citation statements)

References 72 publications

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“…In particular, the peak corresponding to the first neighbors appears at an intermediate point concerning CuO and ZnO. This result seems to agree with previous research, where good adhesion of CuO nanoparticles on ZnO nanowires was reported [48].…”

Section: Resultssupporting

confidence: 93%

Structural Disorder of CuO, ZnO, and CuO/ZnO Nanowires and Their Effect on Thermal Conductivity

et al. 2023

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In this work, the structural defects and the thermal conductivity of CuO, ZnO, and CuO/ZnO nanowires have been studied, using molecular dynamics simulation with COMB3 potential. The initial parameters and atoms positions were taken from reports of bulk materials with tenorite and wurtzite structures, respectively. Nanowires were grown along the c-axis, as observed experimentally. The results confirm the defects apparition in the systems after simulation with a formation of grains to reduce the energy of the nanowires. In the CuO nanowires case, the lack of periodicity in the basal plane causes a contraction effect over the network parameter b of the monoclinic structure with a Cu-O distance reduction. [A constriction effect on inclined planes, as a product of surface charges, deforms the nanowire, generating undulations. In ZnO nanowires, a decrease in the Zn-Zn distance produced a contraction in the nanowire length. A constriction effect was evident on the surface charges. It presented a bond reduction effect, which was larger at the ends of the nanowire. In CuO/ZnO nanowires, the structural defects come from the distortions of the crystalline lattice of the ZnO rather than CuO. The thermal conductivity of the nanowires was calculated at temperatures between 200 K and 600 K using the Green–Kubo equation. Results showed similar values to those reported experimentally, and the characteristic maximum with similar trends to those observed in semiconductors. Our results suggest that structural defects appear in nanowires grown on the free substrate, and are not related to the lattice mismatch.

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Section: Resultssupporting

confidence: 93%

Structural Disorder of CuO, ZnO, and CuO/ZnO Nanowires and Their Effect on Thermal Conductivity

et al. 2023

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“…Both of the nanowires optimally grow at 450 °C in a single experimental setup. As both ZnO and CuO nanowires have engineering importance and in many instances, they are used combinedly for various applications, including catalyst [45,46], solar cell [47,48], gas sensors [49], field emitter [50], and optoelectronics [51], the thermal oxidation process could be a lucrative approach for the growth of 1D ZnO and CuO nanowires. Beside, this process provides an easy, inexpensive, and highly scalable platform for the growth of these nanowires.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of ZnO and CuO Nanowires by Thermal Oxidation on Metallic Substrates

Arafat

Haseeb

Rozali

et al. 2022

KEM

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In this research work, brass (Cu - 37.2 wt% Zn) and Cu (99.9 wt%) wires having diameters of 200 μm were thermally oxidized in N2 containing 5% O2, at a flow rate of 200 sccm and in the ambient atmosphere respectively, to support the growth of nanowires. The oxidation temperature was varied from 300 to 600 °C and the as-grown nanowires were characterized by field emission scanning electron microscope (FESEM) equipped with energy dispersive X-ray (EDX) spectroscope, and transmission electron microscope (TEM). Results show that ZnO and CuO nanowires are formed on brass and Cu wires, respectively. The ZnO nanowires are branched and CuO nanowires are straight with tapered morphology. ZnO nanowires having hexagonal wurtzite structure grow along the <1 1 0> directions whereas, CuO nanowires have monoclinic structure. A diffusion based stress induced model is proposed to explain the growth mechanism of the nanowires. Thermal oxidation process is a suitable platform for synthesizing ZnO and CuO nanowires, which can be used in in-situ device fabrication.

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“…Several biological, physical, and chemical methods have been employed for synthesizing zinc oxide nanoparticle. These methods include vapor deposition [7], where zinc precursor compounds are vaporized and condensed to form nanoparticles. Laser ablation [8] involves using laser pulses to vaporize zinc and collect the resulting nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

GAD plasma-assisted synthesis of ZnO nanoparticles and their photocatalytic activity

Messai,

Ferhat,

Belmekki

et al. 2024

Mater. Res. Express

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In this study, a novel process for synthesizing ZnO nanoparticles using a non-thermal plasma source generated by the Gliding Arc Discharge (GAD) system is presented. The physicochemical properties of the synthesized nanoparticles were characterized using diverse techniques such as scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDAX), UV-Visible spectroscopy (UV-Vis), Fourier transforms infrared spectroscopy (FTIR), and X-ray diffraction (XRD). Furthermore, the effectiveness of the synthesized ZnO nanoparticles for wastewater treatment was evaluated by testing their photocatalytic activity against Brilliant Cresyl Blue (BCB) and Congo Red (CR) using UV light irradiation for 2 hours and 30 minutes. The results confirmed the successful synthesis of highly pure spherical ZnO nanoparticles with a size of 27.18 nm and band gap energy of 3.30 eV in an extremely short duration and simple steps. Furthermore, the GAD plasma-assisted ZnO nanoparticles showed a significant dye removal rate of 90%, demonstrating their potential as a highly effective material for photocatalytic wastewater treatment. This study provides new insights into the application of GAD plasma for nanoparticle synthesis.

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Interface study of hybrid CuO nanoparticles embedded ZnO nanowires heterojunction synthesized by controlled vapor deposition approach for optoelectronic devices

Cited by 19 publications

References 72 publications

Structural Disorder of CuO, ZnO, and CuO/ZnO Nanowires and Their Effect on Thermal Conductivity

Structural Disorder of CuO, ZnO, and CuO/ZnO Nanowires and Their Effect on Thermal Conductivity

Synthesis of ZnO and CuO Nanowires by Thermal Oxidation on Metallic Substrates

GAD plasma-assisted synthesis of ZnO nanoparticles and their photocatalytic activity

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