Effective role of Rb doping in controlling the crystallization, crystal imperfections, and microstructural and morphological features of ZnO-NPs synthesized by the sol–gel approach

Saáedi, Abdolhossein; Akl, Alaa A.; Hassanien, Ahmed Saeed

doi:10.1039/d2ce00483f

Cited by 56 publications

(9 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The calculated parameters are listed in Table . This enhancement in crystallite size and this decrease in microstrain were also observed in previous reports. , …”

Section: Resultssupporting

confidence: 90%

See 1 more Smart Citation

Thermal Annealing-Induced Transformation of Structural, Morphological, Linear, and Nonlinear Optical Parameters of Quaternary As₂₀Ag₁₀Te₁₀Se₆₀ Thin Films for Optical Applications

Das¹,

Senapati²,

Alagarasan

et al. 2022

ACS Appl. Opt. Mater.

View full text Add to dashboard Cite

This work focuses on the structural, optical, and morphological modifications in As 20 Ag 10 Te 10 Se 60 quaternary thin films that are ∼800 nm thick upon thermal annealing at different temperatures. The structure is analyzed by Xray diffraction that reveals the phase transformation (amorphous to crystalline) due to annealing. This material's phase transition enables it to be used in memory device applications. The increase in particle size is confirmed by field emission scanning electron microscopy of the surface. The increase in particle size signifies the agglomeration occurs at higher annealing temperatures. The optical transmittance shows a red shift toward a lower photon energy as recorded by the ultraviolet−visible spectrometer. The optical bandgap of the films decreases (1.84 to 1.72 eV), whereas the refractive index increases as calculated from the Swanepoel method. The decrease in the bandgap is attributed to the increases in the localized states. The amorphous to crystalline transition results in a significant increase in the third-order nonlinear susceptibility (from 4.524 × 10 −11 to 14.146 × 10 −11 esu). The nonlinear refractive index is found to increase from 5.385 × 10 −10 to 14.786 × 10 −10 esu upon annealing. The static and high-frequency dielectric constant increases with the increase in oscillator and dispersion energy. The observed changes are explained on the basis of phase transformation and the density of defect states. The enhanced value of the nonlinear refractive index with a reduced optical electronegativity and carrier concentration with annealing is useful for nonlinear optical devices.

show abstract

“…The calculated parameters are listed in Table . This enhancement in crystallite size and this decrease in microstrain were also observed in previous reports. , …”

Section: Resultssupporting

confidence: 90%

“…This enhancement in crystallite size and this decrease in microstrain were also observed in previous reports. 36,37 3.1.2. Degrees of Crystallinity and Orientation.…”

Section: Acs Applied Optical Materialsmentioning

confidence: 99%

Thermal Annealing-Induced Transformation of Structural, Morphological, Linear, and Nonlinear Optical Parameters of Quaternary As₂₀Ag₁₀Te₁₀Se₆₀ Thin Films for Optical Applications

Das¹,

Senapati²,

Alagarasan

et al. 2022

ACS Appl. Opt. Mater.

View full text Add to dashboard Cite

show abstract

“…The XRD patterns of Cu 2 O reveal prominent peaks at specific angles, indicating the crystallographic orientation of the Cu 2 O thin films. At an applied voltage of −0.95 V, the most pronounced peak is observed at 42.6 degrees (200) [48,49]. Similarly, at −1.0 V, a significant peak is evident at 42.7 planes, providing insights into the preferential growth directions of the crystals.…”

Section: X-ray Diffraction Analysismentioning

confidence: 99%

Preparation of nanostructured cuprous oxide (Cu₂O) absorber layer for photovoltaic application

Awal,

Tanisa,

Rahman

et al. 2024

Micro & Nano Letters

View full text Add to dashboard Cite

In this investigation, a nanostructured Cu2O thin film absorber layer is electrodeposited, exploring the impact of varying negative applied voltages and deposition time. Notably, the Cu2O thin film demonstrated optimal absorbance at −0.95 V, contrasting sharply with a minimum at −0.97 V. The authors' findings underscore that the peak absorbance was achieved at −0.95 V, coinciding with the lowest transmittance observed after 80 min of deposition, aligning with a maximal absorption coefficient of 21 × 103 cm−1. At a deposition time of 5 min, the Cu2O thin film exhibited a noteworthy maximum Urbach energy of 2.00 eV and a minimum steepness parameter of 0.013. In contrast, the lowest Urbach energy was recorded at 0.34 eV, with the highest steepness parameter occurring at an applied voltage of 0.93 V. Furthermore, this study revealed a gradual increase in the refractive index with higher applied voltages, reaching its pinnacle at −1.5 V. These results collectively emphasize the nuanced interplay between applied voltage, deposition time and the optical properties of the nanostructured Cu2O thin film. The observed trends hold significant implications for optimizing the performance of thin film absorber layers, particularly in the context of enhancing absorbance and tailoring optical characteristics for specific applications.

show abstract

“…The crystal structure of synthesized MoO 3 /Ni-F electrode material is studied by XRD analysis with 2θ ranging from 11-55°with Cu Ka radiation (λ = 1.5418 Å). The values of structural parameters like crystallite size (C.S), dislocation density (δ), strain (ε), d-spacing, and lattice parameters (L. P: a, b & c) are calculated by following relations [30][31][32][33][34][35][36][37][38]: Figure 2(B) exhibits the Raman spectra of nanostructured α-MoO 3 /Ni-F electrode material. The Raman bands related to α-MoO 3 /Ni-F are appeared at 285, 335, 380, 460, 671, 819, 992 cm −1 .…”

Section: Structural and Raman Analysismentioning

confidence: 99%

Chemical vapor deposition-based synthesis of binder-free nanostructure α-MoO₃ electrode material for PES devices

Raza,

Ali,

Ayub

et al. 2024

Phys. Scr.

View full text Add to dashboard Cite

Molybdenum-based metal oxides have succeeded in incredible consideration for supercapacitor applications due to their outstanding structural, morphological and electrochemical properties. Herein, a highly porous orthorhombic MoO3 (α-MoO3) nanobenzene like nanosheets are synthesized on nickel foam (Ni-F) via a simple and cost-effective chemical vapor deposition (CVD) technique. The x-ray diffraction (XRD) analysis confirmed the synthesis of nanostructured α-MoO3 having multi oriented diffraction planes. The surface morphology (SEM) analysis indicated that the entwined nanobenzene through nano-rods/particles is beneficial for good electrical conductivity hence the high electrochemical performance of synthesized α-MoO3. The electrochemical properties of synthesized α-MoO3 electrode material like cyclic voltammetry (CV), galvanostatic charging-discharging (GCD) and electrochemical impedance spectroscopy (EIS) are analyzed using a three-electrode electrochemical workstation in 2 M KOH electrolyte solution. The synthesized α-MoO3 pseudocapacitor presented a maximum specific capacitance of 3206 F/g at a current density of 1 A/g. Moreover, α-MoO3 exhibits a cyclic stability of about 99.95% after 3000 cycles, high energy density (111 Wh/kg), power density (2500 W/kg) and negligible charge transfer resistance (0.6 ohms), indicating that it can serve as an excellent electrode material for supercapacitors. The Power law and Dunn’s model simulations also confirmed that the excellent electrochemical performance of synthesized α-MoO3 electrode material is contributed by capacitive as well as diffusion-controlled behavior.

show abstract

Effective role of Rb doping in controlling the crystallization, crystal imperfections, and microstructural and morphological features of ZnO-NPs synthesized by the sol–gel approach

Abstract: This article is dedicated to synthesizing pure ZnO and Rb-doped ZnO nanoparticles, RbxZn1-xO-NPs (x=0.0, 0.02, 0.04, 0.06 mol) using sol-gel technology. Synthesized samples have been characterized and studied utilizing X-ray...

Cited by 56 publications

References 49 publications

Thermal Annealing-Induced Transformation of Structural, Morphological, Linear, and Nonlinear Optical Parameters of Quaternary As₂₀Ag₁₀Te₁₀Se₆₀ Thin Films for Optical Applications

Thermal Annealing-Induced Transformation of Structural, Morphological, Linear, and Nonlinear Optical Parameters of Quaternary As₂₀Ag₁₀Te₁₀Se₆₀ Thin Films for Optical Applications

Preparation of nanostructured cuprous oxide (Cu₂O) absorber layer for photovoltaic application

Chemical vapor deposition-based synthesis of binder-free nanostructure α-MoO₃ electrode material for PES devices

Contact Info

Product

Resources

About

Effective role of Rb doping in controlling the crystallization, crystal imperfections, and microstructural and morphological features of ZnO-NPs synthesized by the sol–gel approach

Abstract: This article is dedicated to synthesizing pure ZnO and Rb-doped ZnO nanoparticles, RbxZn1-xO-NPs (x=0.0, 0.02, 0.04, 0.06 mol) using sol-gel technology. Synthesized samples have been characterized and studied utilizing X-ray...

Cited by 56 publications

References 49 publications

Thermal Annealing-Induced Transformation of Structural, Morphological, Linear, and Nonlinear Optical Parameters of Quaternary As20Ag10Te10Se60 Thin Films for Optical Applications

Thermal Annealing-Induced Transformation of Structural, Morphological, Linear, and Nonlinear Optical Parameters of Quaternary As20Ag10Te10Se60 Thin Films for Optical Applications

Preparation of nanostructured cuprous oxide (Cu2O) absorber layer for photovoltaic application

Chemical vapor deposition-based synthesis of binder-free nanostructure α-MoO3 electrode material for PES devices

Contact Info

Product

Resources

About

Thermal Annealing-Induced Transformation of Structural, Morphological, Linear, and Nonlinear Optical Parameters of Quaternary As₂₀Ag₁₀Te₁₀Se₆₀ Thin Films for Optical Applications

Thermal Annealing-Induced Transformation of Structural, Morphological, Linear, and Nonlinear Optical Parameters of Quaternary As₂₀Ag₁₀Te₁₀Se₆₀ Thin Films for Optical Applications

Preparation of nanostructured cuprous oxide (Cu₂O) absorber layer for photovoltaic application

Chemical vapor deposition-based synthesis of binder-free nanostructure α-MoO₃ electrode material for PES devices