Effect of doping concentration on the structural and optical properties of pure and tin doped zinc oxide thin films by nebulizer spray pyrolysis (NSP) technique

Mariappan, R.; Ponnuswamy, V.; Suresh, P.

doi:10.1016/j.spmi.2012.05.016

Cited by 143 publications

(39 citation statements)

References 43 publications

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“…The increase of texture coefficient (TC (hkl) [ 1) for undoped film shows the preferential orientation of the crystallites along (002) plane. The observed TC (hkl) * 1 for the film deposited with 4 and 6 at.% of Al shows the change of preferential orientation to random (Mariappan et al 2012). The lattice parameters 'a' and 'c' for the hexagonal structure can be calculated by the following equation:…”

Section: Resultsmentioning

confidence: 99%

Characterization and study of antibacterial activity of spray pyrolysed ZnO:Al thin films

et al. 2015

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Aluminum-doped zinc oxide (ZnO:Al) thin films were deposited onto glass substrates using spray pyrolysis technique with the substrate temperature of 400°C. X-ray diffraction analysis indicated that the films were polycrystalline with hexagonal wurtzite structure preferentially oriented along (002) direction. Surface morphology of the films obtained by scanning electron microscopy showed that the grains were of nanoscale size with porous nature for 6 at.% of Al. Atomic force microscopy observations revealed that the particles size and surface roughness of the films decreased with Al-doping. Optical measurements indicated that ZnO:Al (6 at.%) exhibited a band gap of 3.11 eV, which is lower than that of pure ZnO film, i.e. 3.42 eV. Photoluminescence analysis showed weak NBE emission at 396 nm for Al-doped films. The low resistivity, high hall mobility and carrier concentration values were obtained at a doping ratio of 6 at.% of Al. The effective incorporation of 6 at.% of Al into ZnO lattice by occupying Zn sites yielded a well-pronounced antibacterial activity against Staphylococcus aureus.

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Section: Resultsmentioning

confidence: 99%

Characterization and study of antibacterial activity of spray pyrolysed ZnO:Al thin films

et al. 2015

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“…The texture coefficient of 450°C is greater than 1, which indicates that the film is preferentially oriented along (101) plane. At higher substrate temperature, the TC value is less than 1, which indicates the absence of orientation [19,20].…”

Section: Disk Diffusion Methodsmentioning

confidence: 99%

Effect of deposition parameters on the properties of TiO2 thin films prepared by spray pyrolysis

Dhanapandian

Arunachalam

Manoharan

2015

J Sol-Gel Sci Technol

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Titanium dioxide (TiO 2 ) thin films had been deposited onto glass substrates at various substrate temperatures by spray pyrolysis technique. X-ray diffraction analysis of deposited TiO 2 films exhibited nanocrystalline nature and preferentially oriented along (101) direction. Scanning electron microscopy depicted that the films were uniform and adherent to the glass substrate. The field emission scanning electron microscopy (FE-SEM) films, exhibiting almost spherical shape of nanosized particles, was observed. The size of particles of 9.2 nm was observed from high-resolution transmission electron microscopy analysis. The decreased surface roughness observed in atomic force microscopy was due to the decrease in grain size with increased substrate temperatures. All films exhibited a transmittance of about 80 % in the visible region. The direct band gap values were from 2.1 to 3.6 eV by increasing substrate temperature. The photoluminescence spectra measurements indicated that the intensity of emission peaks significantly varies with substrate temperature. Further, these TiO 2 films showed effective antibacterial activity against tested pathogens. Photocatalytic activity of the TiO 2 thin film was studied using an organic dye, methylene blue, under solar irradiation.

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“…The peak at 425 nm is attributed to the Zn interstitials which is due to the recombination of electrons from Zn interstitial level to the holes in the valance band [46] and the peak at 470 nm originates from the recombination of the holes with the electrons from the donor level of singly ionized oxygen vacancies [47].…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

“…Transparent conducting oxide (TCO) thin films have been extensively studied because of their wide spread applications in transparent electrodes, flat panel displays, thin film transistors and solar cells [1][2][3]. Though indium tin oxide (ITO) is the most extensively used transparent electrode material, owing to the toxicity, intrinsic brittleness, scarcity and high cost of indium, the usage of ITO films is restricted to flexible displays and some optoelectronic devices [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Enhancing the electrical parameters of ZnO films deposited using a low-cost chemical spray technique through Ta doping

Ravichandran¹,

Subha²,

Dineshbabu³

et al. 2016

Journal of Alloys and Compounds

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Effect of doping concentration on the structural and optical properties of pure and tin doped zinc oxide thin films by nebulizer spray pyrolysis (NSP) technique

Cited by 143 publications

References 43 publications

Characterization and study of antibacterial activity of spray pyrolysed ZnO:Al thin films

Characterization and study of antibacterial activity of spray pyrolysed ZnO:Al thin films

Effect of deposition parameters on the properties of TiO2 thin films prepared by spray pyrolysis

Enhancing the electrical parameters of ZnO films deposited using a low-cost chemical spray technique through Ta doping

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