Influence of Yttrium on optical, structural and photoluminescence properties of ZnO nanopowders by sol–gel method

Anandan, Sambandam; Muthukumaran, S.

doi:10.1016/j.optmat.2013.06.009

Cited by 57 publications

(21 citation statements)

References 53 publications

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“…All the films show a preferential orientation along the (1 0 1) plane. These observations are in agreement with previous reported results [12,17,18]. The increasing of the intensity of (1 0 1) diffraction peak is related to the improvement in the crystalline quality of the films with the increasing Y concentrations.…”

Section: Methodssupporting

confidence: 93%

“…The blue shift in band gap is arises because the Fermi level lies inside the conduction band for n-type doping, which related to Mass-Burstein effect [22]. A similar result was reported in the previous literature for Y-doped ZnO nano particles [18].…”

Section: Optical Propertiessupporting

confidence: 84%

“…The characteristic IR peaks below 633 cm À1 is ascribed to presence of ZnO-Y bond. The band occurring near 727 cm À1 is attributed to the vibrations of Y-ZnO local bond [18]. Fig.…”

Section: Ftir Analysismentioning

confidence: 96%

“…The average crystallite sizes (D) of the prepared films have been calculated using Scherrer's equation as given below [18] where k, b and h are the X-ray wavelength (1.54060 Å), full width at half maximum (FWHM) and Bragg's diffraction angle of (1 0 1) plane in degrees respectively. The micro-strain (e) can be calculated using the formula [18],…”

Section: Structural Propertiesmentioning

confidence: 99%

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Structural, morphological characteristics and optical properties of Y doped ZnO thin films by sol–gel spin coating method

Thirumoorthi

Prakash

2015

Superlattices and Microstructures

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Section: Methodssupporting

confidence: 93%

Section: Optical Propertiessupporting

confidence: 84%

“…The characteristic IR peaks below 633 cm À1 is ascribed to presence of ZnO-Y bond. The band occurring near 727 cm À1 is attributed to the vibrations of Y-ZnO local bond [18]. Fig.…”

Section: Ftir Analysismentioning

confidence: 96%

Section: Structural Propertiesmentioning

confidence: 99%

See 2 more Smart Citations

Structural, morphological characteristics and optical properties of Y doped ZnO thin films by sol–gel spin coating method

Thirumoorthi

Prakash

2015

Superlattices and Microstructures

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“…Yttrium doping has also resulted in the deep-level emission with strong enhancement in the UV emission intensity, which prompts the application of ZnO nanoparticles in full-color displays and photoelectric nanodevices [15]. Yttrium doping also tunes the emission wavelength of ZnO and makes a supersensitive UV detector [16]. In particular the available experimental data on Y:ZnS system to date is not known to the best of our knowledge.…”

Section: Introductionmentioning

confidence: 99%

Studies on Characterization, Optical Absorption, and Photoluminescence of Yttrium Doped ZnS Nanoparticles

Viswanath

Naik

Somalanaik

et al. 2014

Journal of Nanotechnology

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Pure ZnS and ZnS:Y nanoparticles were synthesized by a chemical coprecipitation route using EDTA-ethylenediamine as a stabilizing agent. X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM), field emission scanning electron microscopy (FE-SEM), Fourier transform infrared spectrometry (FTIR), thermogravimetric-differential scanning calorimetry (TG-DSC), and UV-visible and photoluminescence (PL) spectroscopy were employed to characterize the assynthesized ZnS and ZnS:Y nanoparticles, respectively. XRD and TEM studies show the formation of cubic ZnS:Y particles with an average size of ∼4.5 nm. The doping did not alter the phase of the zinc sulphide, as a result the sample showed cubic zincblende structure. The UV-visible spectra of ZnS and ZnS:Y nanoparticles showed a band gap energy value, 3.85 eV and 3.73 eV, which corresponds to a semiconductor material. A luminescence characteristics such as strong and stable visible-light emissions in the orange region alone with the blue emission peaks were observed for doped ZnS nanoparticles at room temperature. The PL intensity of orange emission peak was found to be increased with an increase in yttrium ions concentration by suppressing blue emission peaks. These results strongly propose that yttrium doped zinc sulphide nanoparticles form a new class of luminescent material.

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Structural, Topography, and Optical Properties of Ba‐Doped Mn₃O₄ Thin Films for Ammonia Gas Sensing Application

Najim

Darwoysh

Dawood

et al. 2018

Physica Status Solidi (a)

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The fabrication of reliable and cost‐effective gas sensor for low concentrations of toxic gases such as ammonia is still a challenging task, in this work the authors report structural, topography, and optical properties of pure and Ba‐doped Mn3O4 thin films prepared by chemical spray pyrolysis (CSP) as well as its gas sensing performance toward low concentrations of ammonia gas. XRD analyses prove the films have tetragonal spinel structure with a preferred orientation along the direction (103). AFM and SEM measurements show the films have homogeneous with rough surfaces and porous structures. EDS measurement confirms the presence of Mn, O, and Ba elements according to a doping concentration ratio. Optical measurements show the optical band gap redshifts and the bond length expands as Ba concentration increases. The optimal results are achieved in Mn3O4:Ba1% thin films where porous structure, rough surface, high crystallinity, and maximum response toward (20, 30, 40, and 50 ppm) of ammonia gas with great stability. Empirical equations are suggested to evaluate the sensitivity in terms of relative bond length and RMS roughness. These results show the films are good candidates in p‐type MOS gas sensors.

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Influence of Yttrium on optical, structural and photoluminescence properties of ZnO nanopowders by sol–gel method

Cited by 57 publications

References 53 publications

Structural, morphological characteristics and optical properties of Y doped ZnO thin films by sol–gel spin coating method

Structural, morphological characteristics and optical properties of Y doped ZnO thin films by sol–gel spin coating method

Studies on Characterization, Optical Absorption, and Photoluminescence of Yttrium Doped ZnS Nanoparticles

Structural, Topography, and Optical Properties of Ba‐Doped Mn₃O₄ Thin Films for Ammonia Gas Sensing Application

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Influence of Yttrium on optical, structural and photoluminescence properties of ZnO nanopowders by sol–gel method

Cited by 57 publications

References 53 publications

Structural, morphological characteristics and optical properties of Y doped ZnO thin films by sol–gel spin coating method

Structural, morphological characteristics and optical properties of Y doped ZnO thin films by sol–gel spin coating method

Studies on Characterization, Optical Absorption, and Photoluminescence of Yttrium Doped ZnS Nanoparticles

Structural, Topography, and Optical Properties of Ba‐Doped Mn3O4 Thin Films for Ammonia Gas Sensing Application

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Structural, Topography, and Optical Properties of Ba‐Doped Mn₃O₄ Thin Films for Ammonia Gas Sensing Application