Synthesis and photoluminescence of ZnO nanowires/nanorods

Grabowska, J.; McGlynn, Enda; Mosnier, Jean-Paul; Henry, M.O.; Beaucamp, Anne; Meaney, A.

doi:10.1007/s10854-005-2304-6

Cited by 25 publications

(20 citation statements)

References 16 publications

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“…The different peaks were observed in the PL measurements. The near-band-edge emission of zinc oxide, due to the direct recombination of excitons, was observed at 382 nm in samples a and b [28]. This recombination confirmed the high surface to volume ratio of the prepared zinc oxide nanoparticles [29].…”

Section: Photoluminescence Spectra Analysissupporting

confidence: 58%

Investigation on room temperature photoluminescence of pure and aluminum doped zinc oxide nanoparticles

Srinivasan¹,

Kannan²

2015

Materials Science-Poland

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Pure and aluminum doped zinc oxide nanoparticles were prepared by soft chemical method. The prepared nanoparticles were characterized by XRD, SEM-EDAX, UV-Vis, PL and FT-IR studies. XRD patterns revealed that the nanoparticles were crystallized in hexagonal wurtzite structure with an average particle size of 19 nm to 26 nm. The surface morphology was explored using SEM micrographs. The incorporation of aluminum was confirmed by EDAX and FT-IR studies. The band gaps of the particles were found from 3.48 eV to 3.53 eV through UV-Vis spectral studies. The defect related mechanism was investigated using PL measurements. The chemical functional groups in FT-IR spectra proved the formation of pure and aluminum doped zinc oxide nanoparticles.

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Section: Photoluminescence Spectra Analysissupporting

confidence: 58%

Investigation on room temperature photoluminescence of pure and aluminum doped zinc oxide nanoparticles

Srinivasan¹,

Kannan²

2015

Materials Science-Poland

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“…ZnO is a wide band gap (3.34 eV) semiconductor material with high-exciton binding energy (60 meV) and higher optical gain than GaN at a room temperature [5,6] . ZnO is one of the promising materials for low-voltage and short-wavelength optoelectronic applications such as UV devices, light-emitting diodes and laser diode [7][8][9] . Its other applications include transparent ultraviolet protection films, gas sensors and varistors [10,11] .…”

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confidence: 99%

Synthesis and optical properties of Ni-doped zinc oxide nanoparticles for optoelectronic applications

Elilarassi

Chandrasekaran

2010

Optoelectron. Lett.

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Nanocrystalline undoped and nickel doped zinc oxide (Zn 1-x Ni x O, x = 0.00, 0.01) powders are successfully synthesized by a simple and low-temperature "auto-combustion method". The microstructural and optical absorption and emission properties of the as-prepared samples are obtained using X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infra-red spectrometer (FTIR), UV-visible and photoluminescence (PL). The structure study confirms the formation of the hexagonal wurtzite ZnO without any secondary phase in the Ni-doped sample. The optical absorption measurements indicate the red shift in the absorption band edge upon nickel doping. The band gap energy decreases from 3.21 eV to 3.17 eV. The photoluminescence spectra of the as-prepared samples under a room temperature show strong ultraviolet (UV) and blue emission peaks. The PL emission research strongly reveals that Ni doping can effectively adjust the energy level which leads to a red shift at the emission peak in UV region.Nanocrystalline materials have attracted extensive attention due to their unique properties and immense potential applications in nanodevice fabrications [1][2][3][4] . ZnO is a wide band gap (3.34 eV) semiconductor material with high-exciton binding energy (60 meV) and higher optical gain than GaN at a room temperature [5,6] . ZnO is one of the promising materials for low-voltage and short-wavelength optoelectronic applications such as UV devices, light-emitting diodes and laser diode [7][8][9] . Its other applications include transparent ultraviolet protection films, gas sensors and varistors [10,11] . Though a wide research has been done on doped nanostructured materials, there are few reports on doped ZnO nanostructures, particularly about their optical properties. The transition metal doped nanostructure is an effective method to adjust the energy levels and surface states of ZnO, which can further introduce changes in its physical and especially optical properties [12] . In addition to the UV excitonic emission peak, ZnO commonly exhibits the visible luminescence at different emission wavelengths due to the intrinsic or extrinsic defects [13] .However, it is still a great challenge to synthesize ZnO nanostructures doped with the transition metal element using a simple process with a low cost. The solution growth method is an effective approach and promising route for synthesizing ZnO nanomaterials at a low temperature. Therefore, the solution growth "auto-combustion method" is used to prepare undoped ZnO and Ni-doped nanomaterials at a low temperature in this paper. The high quality nanocrystalline powders of Zn 1-x Ni x O (x=0.00, 0.01) are successfully synthesized and their structural and optical absorption and emission properties are investigated. The present synthesis method is reproducible and ensures the large scale production at a low temperature.All chemicals used are of analytical grade purity. In a typical synthesis of Zn 1-x Ni x O (x=0.00,0.01) samples, according to the appropriate proportion,...

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“…ZnO nanoparticles can be prepared on a large scale at low cost. Th ere are several methods for preparation of the ZnO nanoparticles such as chemical precipitation (Lupan et al 2007a(Lupan et al , 2007b, sol-gel synthesis (Kim and Kim 2003), and solvothermal/hydrothermal reaction (Ogata et al 2003, Wan et al 2003, Grabowska et al 2005, Aneesh et al 2007). Because of low processing temperature and very easy to control the particle size, hydrothermal technique has more advances than the other methods.…”

Section: Introductionmentioning

confidence: 99%

A novel glutamine biosensor based on zinc oxide nanorod and glutaminase enzyme from Hypocria jecorina

Albayrak

Karakuş

2014

Artificial Cells, Nanomedicine, and Biotechnology

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A novel biosensor for determination of L-glutamine in pharmaceutical glutamine powder was developed via immobilizing our produced glutaminase enzyme from Hypocria jecorina onto our prepared zinc oxide (ZnO) nanorod and chitosan. ZnO nanorods were prepared as surface-dependent and surface-independent and both were used. The biosensor is specific for L-glutamine and the peculiar analytical properties (linearity range, reproducibility, and accuracy) of it were experimentally determined. The optimum operating conditions of the biosensor such as buffer concentration, buffer pH, and medium temperature effect on the response of biosensor were studied. Km and Vmax values for the our-producing glutaminase enzyme from Hypocria jecorina immobilized on the biosensor were also determined as 0.29 mM and 208.33 mV/min., respectively, from Lineweaver-Burk plot. The biosensor was then used for the determination of glutamine contained in pharmaceutical formulations.

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Synthesis and photoluminescence of ZnO nanowires/nanorods

Cited by 25 publications

References 16 publications

Investigation on room temperature photoluminescence of pure and aluminum doped zinc oxide nanoparticles

Investigation on room temperature photoluminescence of pure and aluminum doped zinc oxide nanoparticles

Synthesis and optical properties of Ni-doped zinc oxide nanoparticles for optoelectronic applications

A novel glutamine biosensor based on zinc oxide nanorod and glutaminase enzyme from Hypocria jecorina

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