Parametric study of self-forming ZnO Nanowall network with honeycomb structure by Pulsed Laser Deposition

Zein, Basma El; Boulfrad, Samir; Jabbour, Ghassan E.; Dogheche, El Hadj

doi:10.1016/j.apsusc.2013.12.014

Cited by 20 publications

(16 citation statements)

References 26 publications

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“…A thin layer of ZnO nanowall network with honeycomb structure [ 58 ] was deposited as SL on Si (100).…”

Section: Resultsmentioning

confidence: 99%

“…Prior to deposition; p-type Si (100), and Glass-Indium Tin Oxide (ITO) substrates of 1 × 1.5 cm 2 were ultrasonically cleaned with a consecutive bath of acetone and isopropanol followed by a drying step using compressed nitrogen. The samples were totally covered by a textured thin layer of ZnO; experimental process is presented elsewhere [ 58 ], and then introduced in a high vacuum chamber evacuated to a base pressure of about 10 −6 Torr. The target-to-substrate distance was maintained at 6.5 cm due to equipment restrictions.…”

Section: Methodsmentioning

confidence: 99%

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Toward the Growth of Self-Catalyzed ZnO Nanowires Perpendicular to the Surface of Silicon and Glass Substrates, by Pulsed Laser Deposition

et al. 2020

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Vertically-oriented zinc oxide (ZnO) nanowires were synthesized on glass and silicon substrates by Pulsed Laser Deposition and without the use of a catalyst. An intermediate c-axis oriented nanotextured ZnO seed layer in the form of nanowall network with honey comb structure allows the growth of high quality, self-forming, and vertically-oriented nanowires at relatively low temperature (<400 °C) and under argon atmosphere at high pressure (>5 Torr). Many parameters were shown to affect the growth of the ZnO nanowires such as gas pressure, substrate–target distance, and laser energy. Growth of a c-axis-crystalline array of nanowires growing vertically from the energetically favorable sites on the seed layer is observed. Nucleation occurs due to the matching lattice structure and the polar nature of the ZnO seed layer. Morphological, structural, and optical properties were investigated. X-ray diffraction (XRD) revealed highly c-axis aligned nanowires along the (002) crystal plane. Room temperature photoluminescence (PL) measurements showed a strong and narrow bandwidth of Ultraviolet (UV) emission, which shifts to lower wavelength with the increase of pressure.

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“…A thin layer of ZnO nanowall network with honeycomb structure [ 58 ] was deposited as SL on Si (100).…”

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Toward the Growth of Self-Catalyzed ZnO Nanowires Perpendicular to the Surface of Silicon and Glass Substrates, by Pulsed Laser Deposition

et al. 2020

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“…Starting from 10 min, the two-dimensional ZnO Nanowalls Network (NWaNs) grew vertically on the substrate. The pores were between 50 and 140 nm in size and the wall thickness between the cells was about 50 nm [319]. In 2014, R. Fonseca et al proposed a two-photon-based direct laser writing method to fabricate ZnO nanowire/polymer composites into three-dimensional microstructures that achieved sub-micron spatial resolution [320].…”

Section: Piezoelectric Materialsmentioning

confidence: 99%

The Fabrication of Micro/Nano Structures by Laser Machining

et al. 2019

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Micro/nano structures have unique optical, electrical, magnetic, and thermal properties. Studies on the preparation of micro/nano structures are of considerable research value and broad development prospects. Several micro/nano structure preparation techniques have already been developed, such as photolithography, electron beam lithography, focused ion beam techniques, nanoimprint techniques. However, the available geometries directly implemented by those means are limited to the 2D mode. Laser machining, a new technology for micro/nano structural preparation, has received great attention in recent years for its wide application to almost all types of materials through a scalable, one-step method, and its unique 3D processing capabilities, high manufacturing resolution and high designability. In addition, micro/nano structures prepared by laser machining have a wide range of applications in photonics, Surface plasma resonance, optoelectronics, biochemical sensing, micro/nanofluidics, photofluidics, biomedical, and associated fields. In this paper, updated achievements of laser-assisted fabrication of micro/nano structures are reviewed and summarized. It focuses on the researchers’ findings, and analyzes materials, morphology, possible applications and laser machining of micro/nano structures in detail. Seven kinds of materials are generalized, including metal, organics or polymers, semiconductors, glass, oxides, carbon materials, and piezoelectric materials. In the end, further prospects to the future of laser machining are proposed.

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“…Some of these newly emerging materials are forecasted to enable novel functions and enhanced performance [1][2][3][4][5][6][7] . Widely spread semiconductor nanostructures with efficient electron and exciton transport properties are a promising material for nanoscale electronics, especially for optoelectronic devices [8][9][10][11][12][13] . Since small changes in the properties of nanostructures have a great influence on device performance, overall device reliability depends heavily on the consistency of the used nanostructures.…”

Section: Introductionmentioning

confidence: 99%