Effect of hydrogen pretreatment combined with growth temperature on the morphologies of ZnO nanostructures: Structural and optical properties

Umar, Ahmad; Kim, S.H.; Suh, Eun‐Kyung; Hahn, Yoon‐Bong

doi:10.1016/j.jcrysgro.2007.04.054

Cited by 10 publications

(3 citation statements)

References 41 publications

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“…Also, two weak peaks at 280 and 345 cm À1 are correlated to A 1T and E 2H -E 2L (multi-phonons), respectively. High intensity of E 2 mode and short E 1L peaks confirm the formation of well-crystallined ZnO nanostructure with wurtzite hexagonal crystal structure [52].…”

Section: àmentioning

confidence: 80%

Self-assembled zinc oxide nanostructures via a rapid microwave-assisted route

Mohajerani

Mazloumi

Lak

et al. 2008

Journal of Crystal Growth

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Section: àmentioning

confidence: 80%

Self-assembled zinc oxide nanostructures via a rapid microwave-assisted route

Mohajerani

Mazloumi

Lak

et al. 2008

Journal of Crystal Growth

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“…This result is similar to that obtained in the study of Lyu et al 30, who determined the degree of the alignment of the ZnO NWs as a function of the growth temperature. Therefore, the degree of vertical alignment of ZnO NWs can be attributed to the local substrate temperature 31, which was varied depending on the distance ( l ).…”

Section: Resultsmentioning

confidence: 99%

Diameter‐ and density‐controlled synthesis of well‐aligned ZnO nanowire arrays and their properties using a thermal evaporation technique

Khai

Maneeratanasarn

Choi

et al. 2012

Physica Status Solidi (a)

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Vertically well-aligned ZnO nanowire (NW) arrays were synthesized directly on Si(100) substrate without any metal catalysts by conventional thermal evaporation. The effects of the substrate positions on the structures and properties of ZnO NW arrays were primarily discussed. The orientation and morphology of the resultant NWs were analyzed by using X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The experimental results showed that the density and diameter of the ZnO NWs can be effectively controlled by changing the substrate position. The photoluminescence (PL) characteristics of the grown ZnO NW arrays show a sharp and strong ultraviolet (UV) emission at 380 nm and a very weak green emission at around 490 nm, indicating that the assynthesized NWs have outstanding optical properties with good crystalline quality and may have excellent application potential in optoelectronic devices.

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“…Micrometer-sized tubular ZnO [27] ZnO nanostructures [28] Nanorods [29] ZnO nanoparticles [30] Nanorods [31] Symmetry The E 2 (high) phonon line at 431 cm -1 is distinctly anisomerous (Figure 3). The Fano dissymmetry can be caused by the phonon confinement effect of optical phonons related to the size of ZnO nanorods.…”

Section: This Workmentioning

confidence: 99%

Synthesis and Raman Behaviors of ZnO Nanorods by a Surfactant-Free and Low-Temperature Process

Zheng

Liu

Wang

et al. 2013

AMR

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ZnO nanorods were successfully synthesized using ZnCl2 and NaOH as the starting materials without surfactants, template supporting and structure-directing solvent at low temperatures (20 °C 90 °C). X-ray powder diffraction (XRD) and transmission electron microscopy (TEM) were used to analyze the crystal structure and surface morphology. Analysis of XRD patterns showed that ZnO clusters are single hexagonal phases of wurtzite structure with no other impurities. Also, TEM images revealed that the size of a single ZnO nanorod was between 32 and 60 nm in diameter and between 470 and 740 nm in length. Furthermore, the ZnO nanorods exhibited significant Raman spectrum optical properties suggesting that they have potential for opto-electronic application.

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Effect of hydrogen pretreatment combined with growth temperature on the morphologies of ZnO nanostructures: Structural and optical properties

Cited by 10 publications

References 41 publications

Self-assembled zinc oxide nanostructures via a rapid microwave-assisted route

Self-assembled zinc oxide nanostructures via a rapid microwave-assisted route

Diameter‐ and density‐controlled synthesis of well‐aligned ZnO nanowire arrays and their properties using a thermal evaporation technique

Synthesis and Raman Behaviors of ZnO Nanorods by a Surfactant-Free and Low-Temperature Process

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