Adjusting the band structure and defects of ZnO quantum dots via tin doping

Yang, Weimin; Zhang, Bing; Zhang, Qitu; Wang, Lixi; Song, Bo; Ding, Y.; Wong, Ching‐Ping

doi:10.1039/c6ra25940e

Cited by 37 publications

(14 citation statements)

References 42 publications

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“…The definition of this is the wurtzite solution on the hexagonal base. Therefore, the settlement and the plane indices of the main atomic peak, shown in figure 3 is shown in the wurtzite cell [33].…”

Section: Resultsmentioning

confidence: 99%

Sb doping influence on structural properties of ZnO thin films

Çelik

Baturay

Ocak

2020

Mater. Res. Express

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Pure and Sb doped ZnO thin films were homogeneously prepared at room temperature on the sodalime glass substrates (SLG) via the spin coating technique. The effects of the Sb ratio on structural properties, morphological properties and optical properties were studied via x-ray diffraction (XRD) device, scanning electron microscopy (SEM), and ultraviolet-visible (UV-vis) spectrometry, respectively. Crystalline size (D), the (hkl) planes, and dislocation density (δ) for ZnO thin films were investigated via the XRD pattern. The influence of Sb doping on the preferred crystal orientation and lattice parameters of ZnO thin films were discussed in detail. Optical measurements of ZnO thin films with 0, 1, 2 and 3% Sb concentrations showed a significant effect as a function of Sb dopants on the optical energy band gap. All of the SEM images indicated that while pure ZnO thin films had an apparent nanofiber structure, nanofiber structures disappeared with the increase of doping ratio, and more homogeneous films were obtained.

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Section: Resultsmentioning

confidence: 99%

Sb doping influence on structural properties of ZnO thin films

Çelik

Baturay

Ocak

2020

Mater. Res. Express

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“…7b). 66 The reduced band gap is mainly due to the presence of new energy levels below the conduction band and/or above the valence band of ZnO. 6 Due to the 3d orbital of Fe 3+ , an energy level can be introduced above the valence band of ZnO, leading to a decrease in the band gap, as it will be explained in detail further in the text, part DFT calculations, Figs.…”

Section: Optical Propertiesmentioning

confidence: 99%

Bifunctional catalytic activity of Zn_1−xFe_xO toward the OER/ORR: seeking an optimal stoichiometry

Rajić

Šimatović

Veselinović

et al. 2020

Phys. Chem. Chem. Phys.

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“…35,38 Likewise, decoration with carbon-based materials was used to heal defects. 39 Doping as an intended introduction of defects is suitable to tune the band structure of ZnO based materials, 40 which was used, e.g. in self-powered photodetection.…”

Section: Introductionmentioning

confidence: 99%

Gradient in defect density of ZnO nanorods grown by cathodic delamination, a corrosion process, leads to end-specific luminescence

2018

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ZnO nanorods were grown on a zinc substrate via cathodic delamination of a polymer coating, a tailored corrosion process, at room temperature. A comparison between in situ Raman spectra and post mortem cross sectional analysis by Raman spectroscopy, photoluminescence spectroscopy and scanning electron microscopy shows that in the initial stages of the synthesis, preferentially defect rich ZnO grows. At later stages, crystalline wurtzite ZnO growth dominates. The result is nanorod arrays consisting of nanorods with a large density of point defects in the approximate to 500 nmrange near the zinc substrate, and low defect density in the regions further away from the interface. The growth, which proceeds over several hours, can be interrupted at any time. Large salt concentrations in the corrosive medium increase the growth rate, but also the amount of point defects. The resulting rods show strongly position-dependent luminescence and Raman spectra. Different luminescence can thus be selectively excited, based on the position of excitation

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Adjusting the band structure and defects of ZnO quantum dots via tin doping

Abstract: The structures and band structures of Sn doped ZnO were investigated by density functional theory as well as experiment.

Cited by 37 publications

References 42 publications

Sb doping influence on structural properties of ZnO thin films

Sb doping influence on structural properties of ZnO thin films

Bifunctional catalytic activity of Zn_1−xFe_xO toward the OER/ORR: seeking an optimal stoichiometry

Gradient in defect density of ZnO nanorods grown by cathodic delamination, a corrosion process, leads to end-specific luminescence

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Adjusting the band structure and defects of ZnO quantum dots via tin doping

Abstract: The structures and band structures of Sn doped ZnO were investigated by density functional theory as well as experiment.

Cited by 37 publications

References 42 publications

Sb doping influence on structural properties of ZnO thin films

Sb doping influence on structural properties of ZnO thin films

Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry

Gradient in defect density of ZnO nanorods grown by cathodic delamination, a corrosion process, leads to end-specific luminescence

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Bifunctional catalytic activity of Zn_1−xFe_xO toward the OER/ORR: seeking an optimal stoichiometry