Studies of the electronic excitation modifications induced by SHI of Au ions in RF sputtered ZrO2 thin films

Chauhan, Vishnu; Gupta, Tushar; Koratkar, Nikhil; Kumar, Rajesh

doi:10.1016/j.mssp.2018.08.021

Cited by 35 publications

(8 citation statements)

References 90 publications

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“…However, doping ZrO 2 with 8% yttria (Y 2 O 3 ) stabilizes the cubic zirconia phase to produce yttria‐stabilized zirconia (YSZ). It should be noted that the high melting point of YSZ makes it difficult to prepare large high quality crystals, and the development of applications of YSZ have mainly focused on films, nanocrystals, and ceramics …”

Section: Introductionmentioning

confidence: 99%

Preparation and optical properties of samaria‐doped yttria‐stabilized zirconia single crystals

Tan

Wang

et al. 2019

J Am Ceram Soc

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Single crystals of yttria‐stabilized zirconia (YSZ) doped with various concentrations of Sm2O3 were synthesized by the optical floating zone method, and their structure and spectroscopic properties characterized using powder X‐ray diffraction (XRD), optical absorption, and luminescence measurements. XRD showed that the cubic phase of ZrO2 was stabilized by addition of Y2O3 and a series of absorption peaks characteristic of Sm3+ was detected by UV‐visible absorption spectroscopy. Three phenomenological J‐O oscillator strength parameters Ωt (t = 2, 4, 6) were calculated to evaluate the local structure and bonding in the vicinity of the Sm3+ for the 0.75 mol% Sm2O3: YSZ sample. These were in order of Ω2 < Ω4 < Ω6 with values of Ω2 = 5.46 × 10−20 cm2, Ω4 = 10.70 × 10−20 cm2, and Ω6 = 12.67 × 10−20 cm2, and indicate a relatively high symmetry and low covalent character for the Sm‐O bond at the Sm3+ sites in the YSZ matrix. Photoluminescence spectra recorded under an excitation of 404 nm showed four emission bands centered at 571 nm, 621 nm, 652 nm, and 716 nm corresponding to the transitions 4G5/2→6Hj (j = 5/2, 7/2, 9/2, 11/2). The transition probability, lifetime, and branching ratio obtained from the emission spectrum of the 0.75 mol% Sm2O3: YSZ crystal showed that YSZ is a potential host for Sm3+ to achieve a reddish‐orange laser output, and the Sm3+‐modified YSZ crystals have a possible use in reddish‐orange laser and lighting devices.

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Section: Introductionmentioning

confidence: 99%

Preparation and optical properties of samaria‐doped yttria‐stabilized zirconia single crystals

Tan

Wang

et al. 2019

J Am Ceram Soc

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“…The value of the wavelength corresponding to the position of the maxims in the absorption conforms to the value in Reference [49]. The value of the bandgap energy was calculated using Tauc's relation [50] :…”

Section: The Characteristics Of Molybdenum Oxide Nanoparticlesmentioning

confidence: 63%

Plasma‐assisted synthesis and deposition of molybdenum oxide nanoparticles on polyethylene terephthalate for photocatalytic degradation of rhodamine B

Sirotkin

Khlyustova

Титов

et al. 2020

Plasma Processes & Polymers

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In this study, an atmospheric pressure glow discharge initiated between the metal molybdenum anode and the liquid cathode is applied to produce molybdenum oxide nanoparticles, which are deposited on a polyethylene terephthalate substrate. The presence of nanoparticles in the liquid solution is confirmed by ultraviolet‐vis absorbance spectroscopy and the dynamic light scattering method. The obtained composites are characterized by methods of scanning electron microscopy, infrared spectroscopy, and X‐ray photoelectron spectroscopy. The efficiency of the obtained composite as a photocatalyst is investigated. The composite demonstrates a high photocatalytic performance, ~100% dye removal in 30 min during five cycles of use.

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“…Absorption was observed over the entire wavelength range of sample 2, and the suspension had a characteristic blue color, which indicated the presence of nonstoichiometric molybdenum oxide. [39] The values of the bandgap energy are calculated using the Tauc relationship [40] ðαhvÞ ¼…”

Section: Resultsmentioning

confidence: 99%

“…The lowest sorption capacity is observed for samples containing a large amount of tungsten, which is generally consistent with the data of earlier studies, where it was found that tungsten oxide nanoparticles obtained in plasma have a low porosity. [40] The quantitative amount of dye loading can be determined as follows.…”

Section: Resultsmentioning

confidence: 99%

Fabrication of Dye‐Sensitized Solar Cells Based on Novel Mixed Tungsten–Molybdenum and Tungsten–Titanium Oxides Nanoparticles Prepared by Impulse Underwater Plasma

Sirotkin

Khlyustova

Belikova

2023

Physica Status Solidi (a)

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Herein, a new method for synthesizing advanced nanocomposite materials based on tungsten, molybdenum, and titanium oxides by pulsed underwater plasma is reported. This is an environmentally friendly, energy‐saving, and simple method for obtaining bimetallic oxide nanoparticles with inhomogeneous defect structures. The chemical composition and morphology of the obtained particles are explored by electron microscopy and X‐ray diffraction spectroscopy. Four types of mixed‐oxide particles of tungsten–molybdenum and tungsten–titanium are synthesized and used to make the photoanodes for dye‐sensitized solar cells (DSSCs). The best DSSC shows a fill factor of 51% and a short‐circuit current density of 4.8 mA cm−2, resulting in a conversion efficiency of 4.11% and an improvement over the cells prepared from pure titanium or tungsten oxides.

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Studies of the electronic excitation modifications induced by SHI of Au ions in RF sputtered ZrO2 thin films

Cited by 35 publications

References 90 publications

Preparation and optical properties of samaria‐doped yttria‐stabilized zirconia single crystals

Preparation and optical properties of samaria‐doped yttria‐stabilized zirconia single crystals

Plasma‐assisted synthesis and deposition of molybdenum oxide nanoparticles on polyethylene terephthalate for photocatalytic degradation of rhodamine B

Fabrication of Dye‐Sensitized Solar Cells Based on Novel Mixed Tungsten–Molybdenum and Tungsten–Titanium Oxides Nanoparticles Prepared by Impulse Underwater Plasma

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