Controlled morphological modifications of ZnO thin films by ion irradiation

Kondkar, Vidya; Rukade, Deepti; Kanjilal, D.; Bhattacharyya, Varsha

doi:10.1088/2053-1591/aa9580

Cited by 13 publications

(12 citation statements)

References 29 publications

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“…At the same ion‐implantation fluence, ZnO a ‐plane orientation exhibits the smallest roughness of the facets studied, and the grain size increases with the ion‐implantation fluence. A similar phenomenon was observed in Kondkar et al, 15 where SHI irradiation was applied to ZnO crystalline films and grains in the size of 200 nm were identified with AFM.…”

Section: Resultssupporting

confidence: 82%

“…This can lead to latent track formation and/or to nanostructuring depending on the extent of the energy transferred. A result may be the formation of self‐affine nanostructures over the surface of ZnO, which has been intensively investigated because of the possibility of tuning its surface optical properties (e.g., transparency) 15 …”

Section: Introductionmentioning

confidence: 99%

“…A result may be the formation of self-affine nanostructures over the surface of ZnO, which has been intensively investigated because of the possibility of tuning its surface optical properties (e.g., transparency). 15 An optical response to high-energy ion irradiation in connection with nanostructuring has recently been reported in another semiconductor-GaN. 16 We have studied the defect accumulation and type in various ZnO facets; the study has revealed interesting differences appeared, and it has shown that optical properties can be tuned in various facets in a distinct way.…”

mentioning

confidence: 98%

“…DISCUSSIONPolar (0001) c-plane, non-polar(11)(12)(13)(14)(15)(16)(17)(18)(19)(20) a-plane and (10-10) m-plane ZnO crystals were implanted with 30-MeV Au-ions. RBS-C is sensitive to particular defects that increase the dechannelling yield, for example, to Zn interstitials, Zn-distance modification in the basal planes, which was observed to a larger extent in m-plane ZnO.…”

mentioning

confidence: 99%

“…), it was found that the growth rate along the <0001> axis is different from those along the <11-20> and <10-10> axes. The development of (0001) polar surfaces during the ZnO nanostructure growth is not energetically favourable owing to their higher surface energy than in the case of the and (11)(12)(13)(14)(15)(16)(17)(18)(19)(20) non-polar planes 19 ; the nucleation of the planar defects in these planes can thus be enhanced. 20 In such facets, it is possible to expect prominent growth of defects and/or nanostructures under the ion-beam irradiation, which can lead to the appearance of distinct nanostructures in various ZnO facets.…”

mentioning

confidence: 99%

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Modification of structure and surface morphology in various ZnO facets via low fluence gold swift heavy ion irradiation

Jágerová

Malínský

Mikšová

et al. 2020

Surface & Interface Analysis

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The influence of low fluence high‐energy ion irradiation on the modification of the ZnO surface structure and optical properties has been studied. ZnO samples of various orientations, namely, c‐plane (0001), a‐plane (11–20) and m‐plane (10–10), have been implanted with 30‐MeV Au ions with fluences ranging from 5 × 109 to 5 × 1011 cm−2. Rutherford backscattering spectrometry in the channelling mode (RBS‐C) and Raman spectroscopy has shown the distinct damage accumulation in the irradiated surface layer about 1 μm depending on the ZnO facet being to larger extent evidenced in the m‐plane ZnO. Contrary, the a‐plane ZnO has been exhibited the lowest Zn disorder. Using atomic force microscopy (AFM), a complex morphology was detected on the irradiated samples containing grains and exhibiting increased roughness, both growing with the Au implantation fluence mainly in m‐plane ZnO. Positron annihilation spectroscopy (PAS) has shown distinct defect accumulation at the Au‐ion fluence of 5 × 1011 cm−2, where RBS‐C and Raman spectroscopy indicated sudden disorder increase in the irradiated layers, probably the creation of more complex clusters of Zn and O vacancies 4VZn + 8VO initiated in connection with an overlap of individual ion impacts. Photoluminescence measurements have shown a distinct near‐band‐edge (NBE) luminescence, developing with the increasing Au‐ion fluence in various ZnO orientations. The m‐plane ZnO had the most progressively suppressed NBE in comparison with the other orientations.

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Section: Resultssupporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 98%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Modification of structure and surface morphology in various ZnO facets via low fluence gold swift heavy ion irradiation

Jágerová

Malínský

Mikšová

et al. 2020

Surface & Interface Analysis

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Modification induced by electronic excitation in CoFe₂O₄ thin films: Structural, morphological, and magnetic properties

Nongjai,

Bala,

Khan

et al. 2024

Applied Research

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The present study focuses on the modification induced by 200 MeV Ag15+ and 100 MeV O7+ ion irradiations on the structural, surface morphological, and magnetic properties of radio frequency sputtered CoFe2O4 (CFO) thin films grown on SiO2/Si (100) substrates. X‐ray diffraction (XRD) shows amorphization of the CFO thin films when irradiated with Ag ions and varies with fluences. This effect is absent in the case of O ion irradiated CFO films. These results are consistent with the measurements from the Raman spectroscopy where the intensities of Eg and T2g modes are significantly reduced and further disappear in the high fluence. The surface morphology of the O ion irradiated films is dramatically different from the pristine and Ag ion irradiated films where the surfaces appear in nanopillars‐like patterns. The topography of the O ion irradiated films appears to be like hill and valley structures, the roughness first increases (from 10.11 nm to 24.39 nm). Then it decreases to 18.93 nm on further increasing ion fluence. The coercivity, remnant magnetization, and saturation magnetization increase upon irradiation at low fluence 5×1011 ions/cm2 for both the ion beams and then downturn with the increase of fluence 5×1012 ions/cm2. The changes in the magnetic and structural characteristics are ascribed to the defects induced by ion irradiation. These results are understood based on the structural and surface modifications induced by the electronic excitation of Ag and O ions. The study depicts that a controlled selection of ions and beam fluence can tailor the structure, morphology, and magnetic properties of ferrite films.This article is protected by copyright. All rights reserved.

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Ion beam-induced modifications in ZnO nanostructures and potential applications

Chauhan

Singh²,

Kumar

2021

Nanostructured Zinc Oxide

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Controlled morphological modifications of ZnO thin films by ion irradiation

Cited by 13 publications

References 29 publications

Modification of structure and surface morphology in various ZnO facets via low fluence gold swift heavy ion irradiation

Modification of structure and surface morphology in various ZnO facets via low fluence gold swift heavy ion irradiation

Modification induced by electronic excitation in CoFe₂O₄ thin films: Structural, morphological, and magnetic properties

Ion beam-induced modifications in ZnO nanostructures and potential applications

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Controlled morphological modifications of ZnO thin films by ion irradiation

Cited by 13 publications

References 29 publications

Modification of structure and surface morphology in various ZnO facets via low fluence gold swift heavy ion irradiation

Modification of structure and surface morphology in various ZnO facets via low fluence gold swift heavy ion irradiation

Modification induced by electronic excitation in CoFe2O4 thin films: Structural, morphological, and magnetic properties

Ion beam-induced modifications in ZnO nanostructures and potential applications

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Modification induced by electronic excitation in CoFe₂O₄ thin films: Structural, morphological, and magnetic properties