Enhancement of nonlinear optical parameters upon phase transition in new quaternary Ge20Ag10Te10Se60 films by annealing at various temperatures for optoelectronic applications

Das, Subhashree; Senapati, Subrata; Alagarasan, D.; Varadharajaperumal, S.; Ganesan, R.; Naik, Ramakanta

doi:10.1016/j.jallcom.2022.167000

Cited by 15 publications

(4 citation statements)

References 59 publications

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“…The high-frequency dielectric constant (ε ∞ ) was calculated from the following formula for all the investigated samples using the values of the linear static refractive index (n o ) [93]:…”

Section: Volume and Surface Energy Loss Functionsmentioning

confidence: 99%

Linear and Nonlinear Optical Properties of PVA:SA Blend Reinforced by TiO2 Nanoparticles Prepared by Flower Extract of Aloe Vera for Optoelectronic Applications

et al. 2023

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In this study, a polyvinyl alcohol–sodium alginate blend, PVA:SA 3:1 (w:w), was doped with different contents of TiO2 nanoparticles (NPs) prepared by aloe vera leaf extract to form the investigated nanocomposites. The nonlinear parameters of third-order susceptibility (χ(3)) and refractive index (n2) were detected by using UV-Vis spectroscopy and Z-scan techniques. Some different optical parameters were also determined, including the refractive index (n), optical dielectric parameters, volume and surface energy loss functions, and some others. The best solar skin protection factor (SSPF) was investigated by 5 wt.% of TiO2 NPs doped in PVA:SA 3:1, which was about 84.6% compared to the corresponding value of the host blend (41%). The studied nanocomposites were examined for their utility in the optical limiting of CUT-OFF laser filters utilizing a continuous He-Ne laser working at 632.2 nm. As a result, our finding demonstrated that TiO2 NPs doped in the host blend of PVA:SA positively influences a laser light blocking for the investigated laser source. Using the estimated gap energies values, different models were used to deduce theoretical values of the linear refractive index (n). The presence of Ti peaks in the EDX spectrum confirmed the doping of TiO2 NPs in the nanocomposites. SEM showed that the TiO2 NPs are homogeneously dispersed through the host blend with some agglomerates. XRD spectra showed that the values of the lattice strain εstr. detected at 2ϴ = 19.78° are 0.058, 0.055, and 0.060, corresponding to 1, 3, and 5 wt.% of TiO2 NPs doped in the PVA:SA blend.

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Section: Volume and Surface Energy Loss Functionsmentioning

confidence: 99%

Linear and Nonlinear Optical Properties of PVA:SA Blend Reinforced by TiO2 Nanoparticles Prepared by Flower Extract of Aloe Vera for Optoelectronic Applications

et al. 2023

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“…Based on the XRD pattern, the average crystallite size ( D ) calculated from the full-width half maxima (FWHM) observed prominent peaks using Scherer's equation: 45 where ‘ λ ’ is the Cu K α -line wavelength (1.54 Å), θ is the incidence angle, and β is the FWHM that infers the structural broadening. The δ (dislocation density), ε (lattice strain), and the number of crystallites per unit surface area ( N c ) were evaluated using the following equations: 46 where t has a value of ∼800 nm (film thickness). The evaluated structural parameters for the different films are presented in Table 1 .…”

Section: Resultsmentioning

confidence: 99%

“…where 'l' is the Cu K a -line wavelength (1.54 Å), q is the incidence angle, and b is the FWHM that infers the structural broadening. The d (dislocation density), 3 (lattice strain), and the number of crystallites per unit surface area (N c ) were evaluated using the following equations: 46 Lattice strain ð3Þ ¼ b cot q 4 ;…”

Section: Structural Study By Xrd and Raman Spectroscopymentioning

confidence: 99%

Annealing-induced phase transformation in In₁₀Se₇₀Te₂₀ thin films and its structural, optical and morphological changes for optoelectronic applications

Giri,

Priyadarshini,

Alagarasan

et al. 2023

RSC Adv.

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“…Then, the surface analysis was performed at a voltage of 200 kV (Akhtar et al 2016 ). Simultaneously, selected area electron diffraction (SAED) analysis was carried out on the TEM device to evaluate crystallinity of the sample by using an ImageJ software tool to determine the d-spacing referred to the theta and hkl integers, as reported by Barua et al ( 2019 ) and Das et al ( 2022 ). Furthermore, to verify the elemental composition of CuO NPs, scanning electron microscopy (FEI-SEM, Inspect S50, Netherlands) was conducted at a 15–30 kV voltage equipped with an energy dispersive X-ray spectrophotometer (EDX).…”

Section: Methodsmentioning

confidence: 99%

Is the trend toward a sustainable green synthesis of copper oxide nanoparticles completely safe for Oreochromis niloticus when compared to chemical ones?: using oxidative stress, bioaccumulation, and histological biomarkers

Badran,

Hamed

2024

Environ Sci Pollut Res

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Scientists worldwide have noticed that cutting-edge technologies can be used to produce nanoparticles (NPs) in a sustainable and environmentally friendly way, instead of the old methods. However, the effectiveness of this approach for aquatic environments and species still needs to be determined. Therefore, this study aims to compare between the toxicity of green and chemically synthesized copper oxide nanoparticles (GS and CS) CuO NPs at two different concentrations on Nile tilapia (Oreochromis niloticus) using various biomarkers. CuO NPs’ formation was proved, and their different characterizations were recorded. Then, the fish samples were randomly allocated in glass aquaria into five groups: one acted as a control group, and the other groups were exposed to two concentrations (25 and 50 mg/L) of GS-CuO NPs and CS-CuO NPs, separately, for 4 days. After the experimental time, in all groups that were exposed to two concentrations of both synthesized CuO NPs, the results revealed that glutathione peroxidase (GPx), catalase (CAT), superoxide dismutase (SOD), and thiobarbituric acid reactive substances (TBARS) levels were elevated in the liver and gills compared to glutathione reduced (GSH) content, which showed a significant decline. Bioaccumulation of Cu was more prevalent in the liver than in the gills, and the highest bioaccumulation capacity was more evident in the groups exposed to CS-CuO NPs. Moreover, the bioaccumulation of Cu caused severe histological changes in the liver and gills. In conclusion, the results suggested that GS-CuO NPs revealed less toxicity than CS-CuO NPs to the examined fish. However, they are still toxic, and their toxic effect cannot be overlooked.

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Enhancement of nonlinear optical parameters upon phase transition in new quaternary Ge20Ag10Te10Se60 films by annealing at various temperatures for optoelectronic applications

Cited by 15 publications

References 59 publications

Linear and Nonlinear Optical Properties of PVA:SA Blend Reinforced by TiO2 Nanoparticles Prepared by Flower Extract of Aloe Vera for Optoelectronic Applications

Linear and Nonlinear Optical Properties of PVA:SA Blend Reinforced by TiO2 Nanoparticles Prepared by Flower Extract of Aloe Vera for Optoelectronic Applications

Annealing-induced phase transformation in In₁₀Se₇₀Te₂₀ thin films and its structural, optical and morphological changes for optoelectronic applications

Is the trend toward a sustainable green synthesis of copper oxide nanoparticles completely safe for Oreochromis niloticus when compared to chemical ones?: using oxidative stress, bioaccumulation, and histological biomarkers

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Enhancement of nonlinear optical parameters upon phase transition in new quaternary Ge20Ag10Te10Se60 films by annealing at various temperatures for optoelectronic applications

Cited by 15 publications

References 59 publications

Linear and Nonlinear Optical Properties of PVA:SA Blend Reinforced by TiO2 Nanoparticles Prepared by Flower Extract of Aloe Vera for Optoelectronic Applications

Linear and Nonlinear Optical Properties of PVA:SA Blend Reinforced by TiO2 Nanoparticles Prepared by Flower Extract of Aloe Vera for Optoelectronic Applications

Annealing-induced phase transformation in In10Se70Te20 thin films and its structural, optical and morphological changes for optoelectronic applications

Is the trend toward a sustainable green synthesis of copper oxide nanoparticles completely safe for Oreochromis niloticus when compared to chemical ones?: using oxidative stress, bioaccumulation, and histological biomarkers

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Annealing-induced phase transformation in In₁₀Se₇₀Te₂₀ thin films and its structural, optical and morphological changes for optoelectronic applications