Morphology and crystallinity control of wet chemically grown ZnO nanorods

Volk, János; Erdélyi, R.

doi:10.3906/fiz-1405-12

Cited by 4 publications

(2 citation statements)

References 35 publications

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“…The last method is the hydrothermal growth method [ 18 , 28 , 29 ]. The substrate is first magnetron-sputtered to deposit a seed layer of ZnO crystals [ 30 ] or a catalyst Au layer, and then the substrate is placed in a growth solution configured with zinc nitrate hexahydrate and hexamethylenetetramine (HMTA) for about one hour, and the substrate is placed face-down on top of the growth liquid.…”

Section: Growth Methods Of Zno Nanowiresmentioning

confidence: 99%

Fundamentals and Applications of ZnO-Nanowire-Based Piezotronics and Piezo-Phototronics

et al. 2022

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The piezotronic effect is a coupling effect of semiconductor and piezoelectric properties. The piezoelectric potential is used to adjust the p-n junction barrier width and Schottky barrier height to control carrier transportation. At present, it has been applied in the fields of sensors, human–machine interaction, and active flexible electronic devices. The piezo-phototronic effect is a three-field coupling effect of semiconductor, photoexcitation, and piezoelectric properties. The piezoelectric potential generated by the applied strain in the piezoelectric semiconductor controls the generation, transport, separation, and recombination of carriers at the metal–semiconductor contact or p-n junction interface, thereby improving optoelectronic devices performance, such as photodetectors, solar cells, and light-emitting diodes (LED). Since then, the piezotronics and piezo-phototronic effects have attracted vast research interest due to their ability to remarkably enhance the performance of electronic and optoelectronic devices. Meanwhile, ZnO has become an ideal material for studying the piezotronic and piezo-phototronic effects due to its simple preparation process and better biocompatibility. In this review, first, the preparation methods and structural characteristics of ZnO nanowires (NWs) with different doping types were summarized. Then, the theoretical basis of the piezotronic effect and its application in the fields of sensors, biochemistry, energy harvesting, and logic operations (based on piezoelectric transistors) were reviewed. Next, the piezo-phototronic effect in the performance of photodetectors, solar cells, and LEDs was also summarized and analyzed. In addition, modulation of the piezotronic and piezo-phototronic effects was compared and summarized for different materials, structural designs, performance characteristics, and working mechanisms’ analysis. This comprehensive review provides fundamental theoretical and applied guidance for future research directions in piezotronics and piezo-phototronics for optoelectronic devices and energy harvesting.

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Section: Growth Methods Of Zno Nanowiresmentioning

confidence: 99%

Fundamentals and Applications of ZnO-Nanowire-Based Piezotronics and Piezo-Phototronics

et al. 2022

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“…Note that the deposited ZnO seed layer is expected to undergo epitaxial growth on the GaN layer due to a low lattice mismatch between the two. [30][31][32] A PMMA layer of thickness 420 nm was spin-coated from a 5% solution in anisole (Kayaku Advanced Materials, Japan) on top of the ZnO seed layer. The PMMA film was subsequently exposed to EBL (Elionix ELS-F125, Japan), and soaked for 60 s in a developer (Kayaku Advanced Materials, Japan) composed of methyl isobutyl ketone (MIBK) and isopropyl alcohol (IPA) with a volume ratio of 3:1.…”

Section: Preparation Of the Patterned Substratementioning

confidence: 99%

Dielectric Metasurface from Solution‐Phase Epitaxy of ZnO Nanorods for Subtractive Color Filter Application

Liu

Quan

et al. 2020

Advanced Optical Materials

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In recent years, metasurfaces have received considerable attention owing to their versatile range of applications. However, in the case of metal‐oxide‐based dielectric metasurfaces, the difficulty and cost of a conventional top‐down nano‐fabrication process largely hinder their applications. In this work, a fabrication method is proposed for dielectric metasurfaces based on the solution‐phase epitaxy of ZnO nanorods. Using this method, precise control of the size and position of the synthesized ZnO nanostructures is achieved. Furthermore, a functional subtractive color filter is also designed and fabricated using this approach. The diameters of the synthesized ZnO nanorods range from 180 to 320 nm, and the subtractive color filter exhibits a wide color tuning ability from yellow to magenta to cyan. Such solution‐based bottom‐up fabrication of ZnO nanorods eliminates the need for dry etching, and demonstrates the potential to grow high‐aspect‐ratio ZnO nanostructures for efficient dielectric metasurfaces.

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Recent progress in piezotronic sensors based on one-dimensional zinc oxide nanostructures and its regularly ordered arrays: From design to application

Ghosh

2023

Nano Energy

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Morphology and crystallinity control of wet chemically grown ZnO nanorods

Cited by 4 publications

References 35 publications

Fundamentals and Applications of ZnO-Nanowire-Based Piezotronics and Piezo-Phototronics

Fundamentals and Applications of ZnO-Nanowire-Based Piezotronics and Piezo-Phototronics

Dielectric Metasurface from Solution‐Phase Epitaxy of ZnO Nanorods for Subtractive Color Filter Application

Recent progress in piezotronic sensors based on one-dimensional zinc oxide nanostructures and its regularly ordered arrays: From design to application

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