3D micromorphology-contact resistance-conductivity insights of quasi 2D Cd1-xPbxS thin films: Investigation based on stereometric and fractal analysis

Das, Abhijeet; Matos, Robert Saraiva; Pinto, Erveton Pinheiro; Yadav, R. P.; Ţălu, Ştefan; Kumar, Sanjeev

doi:10.1016/j.matchemphys.2021.125635

Cited by 11 publications

(5 citation statements)

References 53 publications

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“…Similarly, lower and statistically similar degree of surface percolation is observed for all the analyzed films with FS ≤ 0.5. [54,70] A lower degree of microtexture porosity or surface percolation for TNO5 despite its highest roughness can be attributed to the higher uniformity in its surface.…”

Section: Monofractal Analysismentioning

confidence: 99%

Correlating the Nonlinear Roughening and Optical Properties of Anatase Thin Films—A Fractal Geometric Approach

Das

Jaiswal

Borah

et al. 2023

Advcd Theory and Sims

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The anatase phase of TiO2 is highly suitable for photocatalytic application consequently, prerequisite an unpretentious scale‐independent understanding of its roughening‐facilitated surface topography dynamics. Herein, the nonlinear roughening in anatase thin films and its correlation with the nonlinear trend of optical properties in the framework of fractal geometry are investigated. The self‐affine nature of analyzed surfaces is confirmed from the autocorrelation function. The dynamic scaling exponents indicate the existence of Kardar–Parisi–Zhang scaling in surface growth. In addition, the trend of generalized Hurst exponent and mass exponent indicates insignificant multifractal characteristics in the analyzed surfaces. Moreover, fractal analysis explains and aids to description of roughening trend from stereometric and Minkowski functionals analysis. Furthermore, the significance of fractal dimension for probing the surface roughening is validated from the principal component analysis. Consequently, variation in optical bandgap and linear refractive index are investigated in regards to the fractal dimension and root mean‐squared surface slope and regression equations are proposed for tuning of bandgap.

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Section: Monofractal Analysismentioning

confidence: 99%

Correlating the Nonlinear Roughening and Optical Properties of Anatase Thin Films—A Fractal Geometric Approach

Das

Jaiswal

Borah

et al. 2023

Advcd Theory and Sims

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“…By extension, most of the properties of thin film surfaces can be explained via fractal characterizations. Some of these properties include surface wettability [52], electrical [26], electrochemistry [53,54], nano-indentation [55], fouling [56], optical [57] and other properties. Fractal studies have been reported for various thin film materials based on the application of such films, according to the keyword analysis in Figure 6.…”

Section: Keyword Analysismentioning

confidence: 99%

Fractal Theory in Thin Films: Literature Review and Bibliometric Evidence on Applications and Trends

2022

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A bibliometric analysis of publications on fractal theory and thin films is presented in this article. Bibliographic information is extracted from the Web of Science digital database and the bibliographic mapping undertaken using VOSviewer software. Based on the analysis, there is a growing trend in research on the applications of fractal theory in thin film technology. The factors driving this trend are discussed in the article. The co-citation, co-authorship and bibliographic coupling among authors, institutions and regions are presented. The applications of fractal theory in thin film technology are clarified based on the bibliometric study and the directions for future research provided.

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“…[ 26 ] In recent years, fractal geometry‐based parameters have been extensively used to investigate the dynamics of surface morphology and roughness in thin films, correlating them with properties like supercapacitance, contact resistance, wettability, and conductivity. [ 27–30 ] Advanced fractal parameters, including lacunarity, fractal succolarity (FC), and surface entropy, offer insights into surface texture heterogeneity, surface percolation, and uniformity in height distribution. [ 31–33 ]…”

Section: Introductionmentioning

confidence: 99%

“…[26] In recent years, fractal geometry-based parameters have been extensively used to investigate the dynamics of surface morphology and roughness in thin films, correlating them with properties like supercapacitance, contact resistance, wettability, and conductivity. [27][28][29][30] Advanced fractal parameters, including lacunarity, fractal succolarity (FC), and surface entropy, offer insights into surface texture heterogeneity, surface percolation, and uniformity in height distribution. [31][32][33] In electrodeposition, the growth mechanism, morphology, and microstructural properties of the film depend on various conditions, including pH, additives, electrolyte composition, current density, or deposition potential.…”

mentioning

confidence: 99%

Role of Substrate on the Fractal Characteristics of Nanostructure Surfaces of Electrodeposited Nickel Thin Films

Nasehnejad,

Nabiyouni

2024

Physica Status Solidi (b)

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This study investigates the structure, morphological, and roughness properties of electrodeposited nickel thin films grown on different substrates, that is, silicon, copper, and gold. X‐ray diffraction analysis reveals that the Ni coatings exhibit a face‐centered‐cubic phase, regardless of the substrate used, although the texture is mainly influenced by the substrate. Atomic force microscopy images show that larger grains are obtained with gold substrates, while smaller ones are observed with copper and silicon substrates, in agreement with scanning electron microscopy. The results demonstrate that both topological and fractal characteristics of the Ni thin films are significantly influenced by the type of substrate. Statistical parameters are quantified to compare the surface morphology of the different samples. Fractal analysis reveals that the fractal dimensions of all surfaces range between 2 and 3, indicating self‐affinity. Fractal succolarity and lacunarity are measured to assess the penetration of a liquid into the surface and the distribution of gaps in the Ni film surfaces, respectively. Minkowski functionals are utilized for topological analysis to characterize the internal structure of the Ni thin films. The observed differences in roughness characteristics provide evidence that the type of substrate affects the nucleation and growth of surface features during electrodeposition.

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3D micromorphology-contact resistance-conductivity insights of quasi 2D Cd1-xPbxS thin films: Investigation based on stereometric and fractal analysis

Cited by 11 publications

References 53 publications

Correlating the Nonlinear Roughening and Optical Properties of Anatase Thin Films—A Fractal Geometric Approach

Correlating the Nonlinear Roughening and Optical Properties of Anatase Thin Films—A Fractal Geometric Approach

Fractal Theory in Thin Films: Literature Review and Bibliometric Evidence on Applications and Trends

Role of Substrate on the Fractal Characteristics of Nanostructure Surfaces of Electrodeposited Nickel Thin Films

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