Synthesis, structural and enhanced optoelectronic properties of Cd(OH)2/CdO nanocomposite

Bhukkal, Chitra; Chauhan, Meenal; Ahlawat, Rachna

doi:10.1016/j.physb.2019.411973

Cited by 24 publications

(2 citation statements)

References 39 publications

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“…Additionally, in the hightemperature region, there is a broad peak located around 750 °C with a minimal weight loss of 6% and 10%. The latter is ascribed to the complete phase transformation from hexagonal Cd(OH) 2 to cubic CdO which exists as the most prominent phase in annealed samples [31,33].…”

Section: Thermogravimetric Analysis (Tga)mentioning

confidence: 99%

The Co-precipitated preparation, characterization, and optical investigations of Cu-doped CdO nanomaterials

Shalaby¹,

Elshahawy²,

Yousif³

et al. 2022

Phys. Scr.

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The doped-CdO nanostructures with transition metals attract considerable interest due to their chemical and physical properties. That differs from those bulk materials, especially the variation of their optical bandgap, which makes them used in various applications. This communication focuses on the synthesis, characteristic properties of un-doped/doped Cd1-x Cu x O nanocomposites produced by the co-precipitated technique. XRD patterns indicate the polycrystalline nature of the investigated samples whereas Cu atoms have been effectively diffused into the Cd sites. It is found that at lower concentrations of Cu (111) diffraction planes were mainly the preferential ones while at higher concentrations, the plane (200) appeared as a preferential one. The average particle size increases with the addition of Cu dopant. From TEM it is found that the average particle size ranges from ~ 18 to 89 nm. SEM photographs show a formation of distinguished agglomerates. Also, EDX shows that the common elements (Cd, Cu, and O) were obtained without any impurities. The thermal stability increases with increasing Cu concentrations. The optical band gap (E g) decreases and Urbach energy (E u) increases, respectively, with increasing the content of Cu. As a result, the CdO doped Cu can be used to develop novel photovoltaic and light-emitting instruments.

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Section: Thermogravimetric Analysis (Tga)mentioning

confidence: 99%

The Co-precipitated preparation, characterization, and optical investigations of Cu-doped CdO nanomaterials

Shalaby¹,

Elshahawy²,

Yousif³

et al. 2022

Phys. Scr.

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“…One may observe a slight deviation in the peak position of spinel 'Gahnite' given in table 2 probably due to the change in lattice parameters. The d-spacing, lattice constant 'a', and X-ray density (ρ) for the prepared cubic samples are calculated by the following the relation [22]:…”

Section: Calculation Of Important Structural Parametersmentioning

confidence: 99%

Impact of annealing on optimization of various thermal, structural, and optical parameters of spinel ‘gahnite’ for device fabrication

Goswami¹,

Ahlawat²

2022

Phys. Scr.

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The spinel ZnAl2O4 nanopowder has been prepared using the well-known citrate sol-gel technique in which citric acid act as an agent for chelation. The XRD examined the sample crystallinity and phase purity of the samples after annealing at subsequent temperatures. Corresponding functional groups were identified by FTIR. The Surface texture of the samples was interpreted by FE-SEM and HR-TEM, while the constituent elements were evaluated by EDS spectroscopy. The UV-DR spectroscopy exhibits that the bandgap can significantly be tailored in annealed samples owing to the intrinsic impurity energy levels. PL has demonstrated the shift in emission spectra using the site-selective direct and indirect excitations. The prominent emission in the visible region is further emphasized by CIE chromaticity graphs and their specific color coordinates. The decay analysis reveals that the spinel ‘Gahnite’ samples have higher decay constant when excited with direct bandgap energy. It is suggested that the ZnAl2O4 would be a promising substitute as a blue-emitting phosphor in modern photonics.

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Identification of Different Phases and Thermal Analysis of Mn Doped Cadmium Oxide Nano-rods

Bhukkal

Goswami

Ahlawat

2022

Springer Proceedings in Physics

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Synthesis, structural and enhanced optoelectronic properties of Cd(OH)2/CdO nanocomposite

Cited by 24 publications

References 39 publications

The Co-precipitated preparation, characterization, and optical investigations of Cu-doped CdO nanomaterials

The Co-precipitated preparation, characterization, and optical investigations of Cu-doped CdO nanomaterials

Impact of annealing on optimization of various thermal, structural, and optical parameters of spinel ‘gahnite’ for device fabrication

Identification of Different Phases and Thermal Analysis of Mn Doped Cadmium Oxide Nano-rods

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