ZnO Micro- and Nanostructures Obtained by Thermal Oxidation: Microstructure, Morphogenesis, Optical, and Photoluminescence Properties

Escobedo-Morales, A.; Aranda-García, Rubén J.; Anota, E. Chigo; Pérez-Centeno, A.; Méndez-Blas, Antonio; Arana-Toro, Carlos G.

doi:10.3390/cryst6100135

Cited by 6 publications

(3 citation statements)

References 61 publications

(75 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The precursor of Zn 0.9 Co 0.1 O NPs synthesis is the strictly defined quantity of the mixture of zinc acetate and cobalt acetate dissolved in ethylene glycol (2). Zinc acetates and cobalt acetates in the glycol solution are subject to dissociation and hydrolysis (3), as a result of which acetic acid is formed (AcH).…”

Section: Zn 1−x Co X O Nps Size Control Mechanismmentioning

confidence: 99%

See 1 more Smart Citation

Size Control of Cobalt-Doped ZnO Nanoparticles Obtained in Microwave Solvothermal Synthesis

et al. 2018

View full text Add to dashboard Cite

This article presents the method of size control of cobalt-doped zinc oxide nanoparticles (Zn 1−x Co x O NPs) obtained by means of the microwave solvothermal synthesis. Zinc acetate dihydrate and cobalt(II) acetate tetrahydrate dissolved in ethylene glycol were used as the precursor. It has been proved by the example of Zn 0.9 Co 0.1 O NPs (x = 10 mol %) that by controlling the water quantity in the precursor it is possible to precisely control the size of the obtained Zn 1−x Co x O NPs. The following properties of the obtained Zn 0.9 Co 0.1 O NPs were tested: skeleton density (helium pycnometry), specific surface area (BET), dopant content (ICP-OES), morphology (SEM), phase purity (XRD), lattice parameter (Rietveld method), average crystallite size (FW1/5/4/5M method and Scherrer's formula), crystallite size distribution (FW1/5/4/5M method), and average particle size (from TEM and SSA). An increase in the water content in the precursor between 1.5% and 5% resulted in the increase in Zn 0.9 Co 0.1 O NPs size between 28 nm and 53 nm. The X-ray diffraction revealed the presence of only one hexagonal phase of ZnO in all samples. Scanning electron microscope images indicated an impact of the increase in water content in the precursor on the change of size and shape of the obtained Zn 0.9 Co 0.1 O NPs. The developed method of NPs size control in the microwave solvothermal synthesis was used for the first time for controlling the size of Zn 1−x Co x O NPs. Keywords: Co 2+-doped zinc oxide nanoparticles (Zn 1−x Co x O NPs); cobalt-doped ZnO NPs; size control of Co 2+-doped ZnO NPs; synthesis and characterisation of Co 2+-doped ZnO NPs; microwave solvothermal synthesis (MSS) of Co 2+-doped NPs; microwave-assisted synthesis of Co 2+-doped NPs; microwave reactor

show abstract

Section: Zn 1−x Co X O Nps Size Control Mechanismmentioning

confidence: 99%

“…Zinc oxide (ZnO) has attracted the growing interest of numerous research groups due to its specific properties [1][2][3]. It is a II-VI semiconductor.…”

Section: Introductionmentioning

confidence: 99%

Size Control of Cobalt-Doped ZnO Nanoparticles Obtained in Microwave Solvothermal Synthesis

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Larger area one-dimensional (1D) cold cathode arrays play an important role in panel light sources, flat-panel X-ray sources, and photodetectors [ 1 , 2 , 3 , 4 ]. In these materials, field emission properties from zinc oxide (ZnO) nanowire has been extensively studied in recent years [ 5 , 6 , 7 , 8 , 9 , 10 , 11 ], demonstrating facile synthesis of uniform large-area samples that possess low turn-on fields, good emission stabilities, and uniform emission site [ 12 , 13 ]. Therefore, large-area ZnO nanowire field emission arrays (FEAs) have been studied and their subsequent application in various vacuum microelectronic devices has been demonstrated.…”

Section: Introductionmentioning

confidence: 99%

High Current Field Emission from Large-Area Indium Doped ZnO Nanowire Field Emitter Arrays for Flat-Panel X-ray Source Application

et al. 2021

View full text Add to dashboard Cite

Large-area zinc oxide (ZnO) nanowire arrays have important applications in flat-panel X-ray sources and detectors. Doping is an effective way to enhance the emission current by changing the nanowire conductivity and the lattice structure. In this paper, large-area indium-doped ZnO nanowire arrays were prepared on indium-tin-oxide-coated glass substrates by the thermal oxidation method. Doping with indium concentrations up to 1 at% was achieved by directly oxidizing the In-Zn alloy thin film. The growth process was subsequently explained using a self-catalytic vapor-liquid-solid growth mechanism. The field emission measurements show that a high emission current of ~20 mA could be obtained from large-area In-doped sample with a 4.8 × 4.8 cm2 area. This high emission current was attributed to the high crystallinity and conductivity change induced by the indium dopants. Furthermore, the application of these In-doped ZnO nanowire arrays in a flat-panel X-ray source was realized and distinct X-ray imaging was demonstrated.

show abstract

Synthesis of gold-coated branched ZnO nanorods for gas sensor fabrication

et al. 2020

View full text Add to dashboard Cite

ZnO Micro- and Nanostructures Obtained by Thermal Oxidation: Microstructure, Morphogenesis, Optical, and Photoluminescence Properties

Cited by 6 publications

References 61 publications

Size Control of Cobalt-Doped ZnO Nanoparticles Obtained in Microwave Solvothermal Synthesis

Size Control of Cobalt-Doped ZnO Nanoparticles Obtained in Microwave Solvothermal Synthesis

High Current Field Emission from Large-Area Indium Doped ZnO Nanowire Field Emitter Arrays for Flat-Panel X-ray Source Application

Synthesis of gold-coated branched ZnO nanorods for gas sensor fabrication

Contact Info

Product

Resources

About