Effect of sol-age on the surface and optical properties of sol-gel derived mesoporous zirconia thin films

Kumar, Manish; Reddy, G. B.

doi:10.1063/1.3590744

Cited by 24 publications

(9 citation statements)

References 30 publications

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“…For E g calculation, there are many models based on Tauc's plot. 29,30 We used the method as given by Chen et al 29 and found that E g remains as 3.4 eV for all films prepared at different power densities.…”

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confidence: 99%

Simultaneous enhancement of carrier mobility and concentration via tailoring of Al-chemical states in Al-ZnO thin films

Kumar

Wen

Sahu

et al. 2015

Applied Physics Letters

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Articles you may be interested inCarrier mobility of highly transparent conductive Al-doped ZnO polycrystalline films deposited by radio-frequency, direct-current, and radio-frequency-superimposed direct-current magnetron sputtering: Grain boundary effect and scattering in the grain bulk J. Appl. Phys. 117, 045304 (2015); 10.1063/1.4906353 Ultraviolet laser crystallized ZnO:Al films on sapphire with high Hall mobility for simultaneous enhancement of conductivity and transparency Appl. Phys. Lett. 104, 201907 (2014); 10.1063/1.4879643 Improved conductivity of aluminum-doped ZnO: The effect of hydrogen diffusion from a hydrogenated amorphous silicon capping layer

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confidence: 99%

Simultaneous enhancement of carrier mobility and concentration via tailoring of Al-chemical states in Al-ZnO thin films

Kumar

Wen

Sahu

et al. 2015

Applied Physics Letters

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“…There is a lack of the theoretical support for applying the Tauc plot to nanocrystals, and the size dependence of the exponent n may be caused by quantum confinement, that may result in elevated bandgap values . As for porosity, the Tauc method was successfully applied to calculate bandgap in mesoporous zirconia thin films …”

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confidence: 99%

Stabilization of cubic phase in scandium‐doped zirconia nanocrystals synthesized with sol‐gel method

et al. 2018

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A new room‐temperature synthesis of nanocrystals of scandium‐doped zirconium oxide by sol‐gel method is reported. The structure of the obtained product is checked with standard structural analysis methods. The crystal phase of ZrO2‐Sc2O3 nanocrystals changes from monoclinic to tetragonal and cubic with the increase in scandium concentration. The importance of the cubic phase, which appears at 10 mol% and refines at 16 mol% of Sc2O3 concentration, is emphasized. The UV‐Vis absorption spectra of the product are measured, and its bandgap is evaluated from the fundamental absorption edge. The value of the bandgap was calculated as 5.65 eV for the cubic phase.

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“…These films were prepared with a sol-gel dip coating technique using the 3-day aged sol. Details of ZrO 2 film preparation and effect of ageing of sol on deciding the pore size and porosity are elaborated in our earlier studies [22,23]. These films were dipped in aqueous solution of citrate capped Ag nanoparticles (Ag concentration 0.1 M) and Ag-NO 3 /tri-sodium citrate (TSC) molecular ratio as 1:2.…”

Section: Fabrication and Experimentsmentioning

confidence: 99%

Stability-Inspired Entrapment of Ag Nanoparticles in ZrO2 Thin films

Kumar

Reddy

2015

Plasmonics

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Shape and size consistency of Ag nanoparticles is a challenging aspect when practical plasmonic devices are to be developed for their surface-specific activities. This study presents a simple chemical synthesis process which enables effective and rather uniform entrapment of Ag nanoparticles in dielectric oxide matrix at room temperature, without any assistance of physical/chemical agents. Uniformly distributed citrates capped Ag nanoparticles were preformed with a modified BTurkevich^approach and subsequently entrapped in mesoporous ZrO 2 thin films. On the basis of transmission electron microscopy and photoelectron spectroscopy, results, size, shape, and chemical states of Ag nanoparticles were studied and correlated to the plasmonic properties of nanocomposite film formed by such entrapped nanoparticles. Plasmonic stability of these nanoparticles was confirmed in comparison of their dispersion on glass, and explained using extended Mie scattering theory.

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Effect of sol-age on the surface and optical properties of sol-gel derived mesoporous zirconia thin films

Abstract: Effects of aging time and annealing temperature on structural and optical properties of sol-gel ZnO thin films AIP Advances 7, 065213 (2017) Effect of annealing temperature on optical and electrical properties of based nanocomposite thin films

Cited by 24 publications

References 30 publications

Simultaneous enhancement of carrier mobility and concentration via tailoring of Al-chemical states in Al-ZnO thin films

Simultaneous enhancement of carrier mobility and concentration via tailoring of Al-chemical states in Al-ZnO thin films

Stabilization of cubic phase in scandium‐doped zirconia nanocrystals synthesized with sol‐gel method

Stability-Inspired Entrapment of Ag Nanoparticles in ZrO2 Thin films

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