Effect of Ageing in Structural Properties of ZnO Nanoparticles with pH Variation for Application in Solar Cells

Singh, Neetu

doi:10.2174/1876387101205010015

Cited by 17 publications

(6 citation statements)

References 13 publications

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“…Decreased crystallite size with aging period has been reported earlier [20]. Singh et al [21] and Kaneva et al [19] reported improved crystallinity and increased crystallite size values with aging period of the precursor solution, which matched with our results. Coarsening or ripening occurs due to aging according to which material dissolves from the surface of large materials and deposits on the narrow necks, thereby joining particles to each other which enhanced the crystallite size [22].…”

Section: Xrd Studiessupporting

confidence: 93%

Structural, morphological and optoelectronic properties of CdO:Ag films – precursor solution aging effect

Raja¹,

Nagarethinam²,

Balu³

2019

Surface Engineering

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Ag-doped CdO (CdO:Ag) thin films were prepared by spray technique using perfume atomizer from fresh and aged (1, 3 and 5 days) starting solutions. The as-deposited films were characterized by X-ray diffraction, scanning electron microscope, energy dispersive spectroscopy and photoluminescence studies. Face-centred cubic structure and decreased crystallite size were observed with aging period of the precursor solution. Transparency and band gap value increase with aging period of the solution. The CdO:Ag film prepared from 3days aged solution exhibits a minimum resistivity of 0.98 × 10 −4 Ω cm. The aged CdO:Ag films exhibit increased figure of merit values. Thus, aging period of the precursor solution strongly influenced the structural, optical and electrical properties of the Ag-doped CdO thin films.

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Section: Xrd Studiessupporting

confidence: 93%

Structural, morphological and optoelectronic properties of CdO:Ag films – precursor solution aging effect

Raja¹,

Nagarethinam²,

Balu³

2019

Surface Engineering

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“…It is used to synthesize highquality homogenous nanoparticles using non-vacuum conditions. 46 In sol-gel technique, hydrolysis and condensation reactions are involved in an organometallic precursor (like alkoxides, chloride, beta-diketonate or nitrate) under aqueous conditions forming a solid material. In the beginning, the precursor solution undergoes hydrolysis and condensation reactions leading to the formation of gel; which is followed by ageing, solvent extraction and drying treatment of synthesized product so as to get the required material.…”

Section: Potentials Of the Sol-gel Processmentioning

confidence: 99%

Review—Influence of Processing Parameters to Control Morphology and Optical Properties of Sol-Gel Synthesized ZnO Nanoparticles

Arya

Mahajan

Mahajan³

et al. 2021

ECS J. Solid State Sci. Technol.

232

132

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ZnO has several potential applications into its credit. This review article focuses on the influence of processing parameters involved during the synthesis of ZnO nanoparticles by sol-gel method. During the sol-gel synthesis technique, the processing parameters/experimental conditions can affect the properties of the synthesized material. Processing parameters are the operating conditions that are to be kept under consideration during the synthesis process of nanoparticles so that various properties exhibited by the resulting nanoparticles can be tailored according to the desired applications. Effect of parameters like pH of the sol, additives used (like capping agent, surfactant), the effect of annealing temperature and calcination on the morphology and the optical properties of ZnO nanoparticles prepared via sol-gel technique is analyzed in this study. In this study, we tried to brief the experimental investigations done by various researchers to analyze the influence of processing parameters on ZnO nanoparticles. This study will provide a platform to understand and establish a correlation between the experimental conditions and properties of ZnO nanoparticles prepared through sol-gel route which will be helpful in meeting the desired needs in various application areas.

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“…Also, Fathollahi et al 37 found a threefold increase in the intensity of (002) reflection of zinc oxide films using a 3-week-aged zinc acetate solution in comparison to the freshly prepared solution when all the other variables were kept fixed. Similarly, Singh et al 38 synthesized ZnO nanoparticles via Sol-gel route; they found that the crystallite size as well as the crystallinity of the nanoparticles increased with aging. Ibrahim et al 29 observed that by increasing the precursor aging time, an enhancement of the intensity for all diffraction peaks occurs in general.…”

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confidence: 99%

Morphological, Structural and Optical Properties of ZnO Thin Films Deposited by Dip Coating Method

et al. 2016

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Zinc oxide (ZnO) thin films were deposited on glass substrat by dip coating technique. The effects of sol aging time on the deposition of ZnO films was studied by using the field emission scanning electron microscopy (FE-SEM), atomic force microscopy (AFM), X-ray diffraction (XRD), and optical transmission techniques. The morphology of the films strongly depends on preparation route and deposition technique. It is noteworthy that films deposited from the freshly prepared solution feature indistinct characteristics; had relatively poor crystalline quality and low optical transmittance in the visible region. The increase in sol aging time resulted in a gradual improvement in crystallinity (in terms of peak sharpness and peak intensity) of the hexagonal phase for all diffraction peaks. Effect of sol aging on optical transparency is quite obvious through increased transmission with prolonged sol aging time. Interestingly, 72-168 h sol aging time was found to be optimal to achieve smooth surface morphology, good crystallinity and high optical transmittance which were attributed to an ideal stability of solution. These findings present a better-defined and more versatile procedure for production of clean ZnO sols of readily adjustable nanocrystalline size.

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Effect of Ageing in Structural Properties of ZnO Nanoparticles with pH Variation for Application in Solar Cells

Cited by 17 publications

References 13 publications

Structural, morphological and optoelectronic properties of CdO:Ag films – precursor solution aging effect

Structural, morphological and optoelectronic properties of CdO:Ag films – precursor solution aging effect

Review—Influence of Processing Parameters to Control Morphology and Optical Properties of Sol-Gel Synthesized ZnO Nanoparticles

Morphological, Structural and Optical Properties of ZnO Thin Films Deposited by Dip Coating Method

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