XPS and optical studies of different morphologies of ZnO nanostructures prepared by microwave methods

Al-Gaashani, R.; Radiman, Shahidan; Daud, Abdul Razak; Tabet, Nouar; Al‐Douri, Y.

doi:10.1016/j.ceramint.2012.08.075

Cited by 925 publications

(469 citation statements)

References 46 publications

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“…2 shows O 1s XPS spectra for precursorroute ZnO films cast from EtOH (top) and mixed solvent (bottom). For Zn 2p orbitals, we find the usual split into Zn 2p 1/2 Zn 2p 3/2 orbitals [15][16][17][18][19]. The (non-Gaussian) O 1s peaks in Fig.…”

Section: Resultsmentioning

confidence: 77%

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Precursor-route ZnO films from a mixed casting solvent for high performance aqueous electrolyte-gated transistors

Althagafi

Algarni

Naim

et al. 2015

Phys. Chem. Chem. Phys.

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eprints@whiterose.ac.uk https://eprints.whiterose.ac.uk/ Reuse Unless indicated otherwise, fulltext items are protected by copyright with all rights reserved. The copyright exception in section 29 of the Copyright, Designs and Patents Act 1988 allows the making of a single copy solely for the purpose of non-commercial research or private study within the limits of fair dealing. The publisher or other rights-holder may allow further reproduction and re-use of this version -refer to the White Rose Research Online record for this item. Where records identify the publisher as the copyright holder, users can verify any specific terms of use on the publisher's website. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request. This is an Accepted Manuscript, which has been through the Royal Society of Chemistry peer review process and has been accepted for publication.Accepted Manuscripts are published online shortly after acceptance, before technical editing, formatting and proof reading. Using this free service, authors can make their results available to the community, in citable form, before we publish the edited article. We will replace this Accepted Manuscript with the edited and formatted Advance Article as soon as it is available. AbstractWe significantly improved the performance of precursor-route semiconducting zinc oxide (ZnO) films in electrolyte-gated thin film transistors (TFTs). We find that the organic precursor to ZnO, Zinc Acetate (ZnAc), dissolves more readily in a 1:1 mix of ethanol (EtOH) and acetone than in either pure EtOH, pure acetone, or pure isopropanol. XPS and SEM characterisation show improved morphology of ZnO films converted from mixed solvent cast ZnAc precursor compared to EtOH cast precursor. When gated with a biocompatible electrolyte, phosphate buffered saline (PBS), ZnO thin film transistors (TFTs) derived from mixed solvent cast ZnAc give 4 times larger field effect current than similar films derived from ZnAc cast from pure EtOH. Sheet resistance at V G = V D = 1V is 30 kΩ/!, lower than for any organic TFT, and lower than for any electrolyte-gated ZnO TFT reported to date.

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Section: Resultsmentioning

confidence: 77%

“…2 have been resolved into a superposition of two overlapping Gaussians. The lower energy Gaussian has been attributed to O 2− ions bound into the regular wurtzite structure of ZnO (Zn-O-Zn), the higher energy Gaussian to oxygen in metal-OH (M-OH) surface groups [15].…”

Section: Resultsmentioning

confidence: 99%

Precursor-route ZnO films from a mixed casting solvent for high performance aqueous electrolyte-gated transistors

Althagafi

Algarni

Naim

et al. 2015

Phys. Chem. Chem. Phys.

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“…The peaks for Zn 2p 3/2 and Zn 2p 1/2 ( Figure 5e) were observed at binding energies of 1021.0 eV and 1043.8 eV, respectively. The difference between Zn 2p 3/2 and Zn 2p 1/2 splitting was 22.8 eV (~23 eV) which corresponded with the standard value of ZnO indicating the presence of Zn 2+ species in the PES/ZnO matrix [32]. The study on optical response of resultant PES/ZnO (PZ-17) sample and its correlation with the UV light was carried out using UV-Vis Diffuse Reflectance Spectroscopy.…”

Section: X-ray Photoelectron and Optical Property Analysismentioning

confidence: 89%

Photoactive Hybrid Film Photocatalyst of Polyethersulfone-ZnO for the Degradation of Methyl Orange Dye: Kinetic Study and Operational Parameters

et al. 2017

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Abstract:A facile and effective technique to immobilize photocatalyst nanoparticles by incorporating zinc oxide (ZnO) into polyethersulfone polymeric films by means of a phase inversion technique is reported. The degradation study of methyl orange (MO) dye was performed using a series of ZnO-embedded polymer hybrid systems. The photoactivity of the films increased in parallel with increased ZnO loading up to 17 wt%. The photodegradation process followed a pseudo first-order kinetics with an achievement of almost 100% MO removal in original conditions. The PZ-17 film demonstrated an excellent and comparable degradation performance up to five cycles, signifying the reliability of the film photocatalyst against ultraviolet irradiation and degradation.

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“…3 illustrates the field dependences of magnetization of Zn 1-x Co x O y thin films. It is seen that the magnetic properties of Zn 1-x Co x O y thin films change non-monotonically with the increase of the dopant concentration [15,16]. It has been revealed that Zn 1-x Co x O y samples (x=0; 0.03; 0.1) are paramagnetics, while the other samples possess a weak ferromagnetism at room temperature.…”

Section: Methods Of Sample Researchmentioning

confidence: 98%

Influence of oxygen vacancies on magnetic and transport properties of thin Zn_1-xCo_xO_y films

et al. 2018

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Abstract. The features of the structural, transport and magnetic properties of thin Zn 1-x Co x O y films (x=0-0.45), fabricated on с-sapphire substrates by the pulsed laser deposition method are studied. It is found that the transport and ferromagnetic properties of the wurtzite Zn 1-x Co x O y films nonmonotonously depend on Co concentration at room temperature. For the Zn 0.87 Co 0.13 Oy film, the strongest ferromagnetic signal is observed that is caused by formation of the greatest number of metallic Co clusters. A further increase of doping impurity concentration in the films leads to the oxidation of metallic Co and formation of the paramagnetic Co 3 O 4 phase, in consequence of which the ferromagnetic signal subsides.

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XPS and optical studies of different morphologies of ZnO nanostructures prepared by microwave methods

Cited by 925 publications

References 46 publications

Precursor-route ZnO films from a mixed casting solvent for high performance aqueous electrolyte-gated transistors

Precursor-route ZnO films from a mixed casting solvent for high performance aqueous electrolyte-gated transistors

Photoactive Hybrid Film Photocatalyst of Polyethersulfone-ZnO for the Degradation of Methyl Orange Dye: Kinetic Study and Operational Parameters

Influence of oxygen vacancies on magnetic and transport properties of thin Zn_1-xCo_xO_y films

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XPS and optical studies of different morphologies of ZnO nanostructures prepared by microwave methods

Cited by 925 publications

References 46 publications

Precursor-route ZnO films from a mixed casting solvent for high performance aqueous electrolyte-gated transistors

Precursor-route ZnO films from a mixed casting solvent for high performance aqueous electrolyte-gated transistors

Photoactive Hybrid Film Photocatalyst of Polyethersulfone-ZnO for the Degradation of Methyl Orange Dye: Kinetic Study and Operational Parameters

Influence of oxygen vacancies on magnetic and transport properties of thin Zn1-xCoxOy films

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Influence of oxygen vacancies on magnetic and transport properties of thin Zn_1-xCo_xO_y films