Effect of phase transformation on optical and dielectric properties of pulsed laser deposited ZnTiO3 thin films

Jain, Prerna; Salim, Mohammad; Kaur, Davinder

doi:10.1016/j.spmi.2016.02.018

Cited by 20 publications

(9 citation statements)

References 29 publications

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“…They are still under extensive studies to fully understand how the incorporation of titanium takes place and how influences the physical properties. Moreover the phase transformation and its effect on optical and dielectric properties of ZnTiO 3 thin films are still under considerable debate [11,12,13] and deserve further experimental consideration.…”

Section: Introductionmentioning

confidence: 99%

Optical properties of zinc titanate perovskite prepared by reactive RF sputtering

Müllerová

Šutta

Medlín

et al. 2017

Journal of Electrical Engineering

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In this paper we report results from optical transmittance spectroscopy complemented with data on structure from XRD measurements to determine optical properties of a series of ZnTiO 3 perovskite thin films deposited on glass by reactive magnetron co-sputtering. The members of the series differ by the titanium content that was revealed as an origin of the changes not only in structure but also in dispersive optical properties. Low porosity has been discovered and calculated using the Bruggeman effective medium approximation. An apparent blue-shift of the optical band gap energies with increasing titanium content was observed. The observed band gap engineering is a good prospective for eg optoelectronic and photocatalytic applications of ZnTiO 3 .

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Section: Introductionmentioning

confidence: 99%

Optical properties of zinc titanate perovskite prepared by reactive RF sputtering

Müllerová

Šutta

Medlín

et al. 2017

Journal of Electrical Engineering

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“…[26] To the best of our knowledge, band gap variation in zinc titanates versus crystallite size is not yet reported in the literature. Therefore, these band gaps were calculated by the ratio between the absorption edge and photon energy (hν) can be written as follows: [33] ðahnÞ…”

Section: Resultsmentioning

confidence: 99%

Effect of Annealing Temperature on Structural and Optical Properties of ZnTiO₃ Perovskite Layers Deposited on Silicon for Photocatalytic Applications

et al. 2021

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In this paper, we investigate the effect of annealing temperature on structural, optical, and photocatalytic properties of nanostructured ZnTiO3 thin films deposited on Si substrates. ZnTiO3 coatings were prepared by consecutive sol-gel method and further deposited on Si substrates by spin-coating. The obtained films were annealed at three various temperatures namely 700°C, 800°C, and 900°C. X-ray diffraction analysis shows that the crystallite size of the films grows from 100 to 125 nm as the annealing temperature increases from 700 to 900°C. At the same time, the roughness increases from 232 to 289 nm and the band gap dwindles from 3.73 to 3.05 eV. ZnTiO3 coatings annealed at 700°C exhibits the highest photodegradation rate about 74 % to catalyze the degradation of the Methylene Blue aqueous solution. We demonstrate that this high photocatalytic activity is attributed to the structural and optical properties of prepared samples.

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“…), demanded from the point of view of new potential applications: transparent conductive contacts (TCOs), laser diodes including UV light emitting diodes, thin film transistors, mobile phones, microwave dielectrics, etc. [5][6][7][8]. Actually, n-type doping controlled by the incorporation of certain elements in the ZnO network is a recurrent method for tailoring both the bandwidth energy and electrical conductivity by increasing the concentration of carriers while keeping a high transparency in the visible range [9].…”

Section: Introductionmentioning

confidence: 99%

Effect of the Incorporation of Titanium on the Optical Properties of ZnO Thin Films: From Doping to Mixed Oxide Formation

et al. 2019

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ZnO films with Ti atoms incorporated (TZO) in a wide range (0–18 at.%) have been grown by reactive co-sputtering on silicon and glass substrates. The influence of the titanium incorporation in the ZnO matrix on the structural and optical characteristics of the samples has been determined by Rutherford backscattering spectroscopy (RBS), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD). The results indicate that the samples with low Ti content (<4 at.%) exhibit a wurtzite-like structure, with the Ti4+ ions substitutionally incorporated into the ZnO structure, forming Ti-doped ZnO films. In particular, a very low concentration of Ti (<0.9 at.%) leads to a significant increase of the crystallinity of the TZO samples. Higher Ti contents give rise to a progressive amorphization of the wurtzite-like structure, so samples with high Ti content (≥18 at.%) display an amorphous structure, indicating in the XPS analysis, a predominance of Ti–O–Zn mixed oxides. The energy gap obtained from absorption spectrophotometry increases from 3.2 eV for pure ZnO films to 3.6 eV for those with the highest Ti content. Ti incorporation in the ZnO samples <0.9 at.% raises both the blue (380 nm) and green (approx. 550 nm) bands of the photoluminescence (PL) emission, thereby indicating a significant improvement of the PL efficiency of the samples.

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Effect of phase transformation on optical and dielectric properties of pulsed laser deposited ZnTiO3 thin films

Cited by 20 publications

References 29 publications

Optical properties of zinc titanate perovskite prepared by reactive RF sputtering

Optical properties of zinc titanate perovskite prepared by reactive RF sputtering

Effect of Annealing Temperature on Structural and Optical Properties of ZnTiO₃ Perovskite Layers Deposited on Silicon for Photocatalytic Applications

Effect of the Incorporation of Titanium on the Optical Properties of ZnO Thin Films: From Doping to Mixed Oxide Formation

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Effect of phase transformation on optical and dielectric properties of pulsed laser deposited ZnTiO3 thin films

Cited by 20 publications

References 29 publications

Optical properties of zinc titanate perovskite prepared by reactive RF sputtering

Optical properties of zinc titanate perovskite prepared by reactive RF sputtering

Effect of Annealing Temperature on Structural and Optical Properties of ZnTiO3 Perovskite Layers Deposited on Silicon for Photocatalytic Applications

Effect of the Incorporation of Titanium on the Optical Properties of ZnO Thin Films: From Doping to Mixed Oxide Formation

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Effect of Annealing Temperature on Structural and Optical Properties of ZnTiO₃ Perovskite Layers Deposited on Silicon for Photocatalytic Applications