Structural, optical and electrical properties of CuSCN nano-powders doped with Li for optoelectronic applications

Abdulwahab, A.M.; Al-Mahdi, Enas Abdullah; Al-Osta, Ahmed; Qaid, A.A.

doi:10.1016/j.cjph.2021.06.026

Cited by 13 publications

(3 citation statements)

References 58 publications

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“…e spectra revealed characteristic maximum absorbances at 370, 375, and 378 nm, respectively, indicating quantum size effects [38]. e bandgap energy (E g ) as calculated from Tauc's plotting for the direct allowed transition, described by Equation (3) [40][41][42], was found at 2.87, 2.80, and 1.92 eV, respectively for ZnO-NPs (Z20, Z30, and Z40) prepared using different extract volumes (20, 30, and 40 mL) (Figures 5(b)-5(d))). is denotes that the extract volume has an impact on the resulting bandgap of the synthesized ZnO-NPs, i.e., with PPE extract volume increase, the E g decreased.…”

Section: Uv-vis Analysismentioning

confidence: 99%

Pomegranate Peel Extract-Mediated Green Synthesis of ZnO-NPs: Extract Concentration-Dependent Structure, Optical, and Antibacterial Activity

Alnehia

Al-Odayni

Al-Sharabi

et al. 2022

Journal of Chemistry

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Plant-based nanoparticles (NPs) have many advantages over physical and chemical methods and featured with several medicinal and biological applications. In this study, zinc oxide NPs (ZnO-NPs) were synthesized using pomegranate peel aqueous extract, under mild and ecofriendly conditions. The ZnO-NPs structure, morphology, and optical properties were investigated using X-ray diffraction (XRD), scanning electron microscope (SEM), Fourier transform infrared (FTIR), and ultraviolet-visible (UV-Vis). Antibacterial activity against Gram-positive and Gram-negative strains were evaluated using the disk diffusion method. The effect of extract concentration (20, 30, and 40 mL) on the final properties of NPs, as well as the NPs concentration used for antibacterial test (50, 100, and 200 mg/mL), were also studied. The results indicate a hexagonal structure with particle size increases as extract concentration increase (D = 18.53, 29.88, and 30.34 nm), while the optical bandgap was decreased (Eg = 2.87, 2.80, and 1.92 eV). The antibacterial activity of ZnO-NPs indicated high efficiency, similar or even higher than that of the control azithromycin, more against S. aureus, increased with NPs concentration, and preferred when NPs prepared from high extract concentration. Such promising physicochemical properties support the usefulness and efficacy of the reported bio-route for production of ZnO-NPs and may encourage its application for large-scale production.

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Section: Uv-vis Analysismentioning

confidence: 99%

Pomegranate Peel Extract-Mediated Green Synthesis of ZnO-NPs: Extract Concentration-Dependent Structure, Optical, and Antibacterial Activity

Alnehia

Al-Odayni

Al-Sharabi

et al. 2022

Journal of Chemistry

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“…The diffraction peaks of the sample at ambient conditions agree well with those of the β phase. 31,32 No obvious change is observed in the pattern with increasing pressure up to 4 GPa, except for the shift of diffraction peaks to higher angles. At above 4 GPa, several new peaks appeared (as indicated by the asterisk), and the intensity of these peaks gradually grew with pressure, while the diffraction peaks from the β phase weakened, suggesting a structural phase change in β-CuSCN at this pressure, which is consistent with the Raman and IR measurements.…”

Section: ■ Results and Discussionmentioning

confidence: 93%

Pressure-Dependent Structural and Band Gap Tuning of Semiconductor Copper(I) Thiocyanate (CuSCN)

Yang

Zhai

et al. 2022

Inorg. Chem.

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Copper(I) thiocyanate (CuSCN) is a p-type semiconductor with exceptional properties for optoelectronic devices such as solar cells, thin-film transistors , organic light-emitting diodes, etc. Understanding the structure−optical property relationships in CuSCN is critical for its optoelectronic applications. Herein, highpressure techniques combined with theoretical calculations are used to thoroughly investigate the structural and optical changes of CuSCN upon compression. Under high pressure, CuSCN exhibits a progressive decrease of the band gap with different rates, which is relevant to the β to α phase transition in CuSCN and the subsequent amorphization through polymerization. UV−vis spectra measurements reveal a reduction in band gap from 3.4 to 1.3 eV upon decompression to ambient conditions. Such transitions could be attributed to the pressure-induced rotation of CuNS 3 tetrahedron and bond length shrinkage. The severe distortion of the polyhedral units prompts breakdown of the structure and thus the amorphization, which is quenchable to ambient conditions. Our study demonstrates that high pressure can be utilized to adjust the structure and optical characteristics of CuSCN compound, potentially extending the material's uses in optoelectronic devices.

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“…Te XRD peaks for Ag-ZnS demonstrate the formation of clear distinct phases for Ag, ZnS, and Zn. Te crystallite size D (nm) and the average dislocation density (δ) for all the synthesized materials were estimated using the Scherer formula D � (0.9λ/β cos θ) [30,31] and δ � 1/D 2 [32], respectively. Te microstrain (ε) was computed using the equation ε � β cos θ/4, where β is the full width at half maximum, λ � 0.154 nm, and θ is Bragg's difraction angle, and Stacking fault (SF) was calculated by the equation SF � [2π 2 /45(3 tan θ) .5 ]β [33,34].…”

Section: Xrd Analysismentioning

confidence: 99%

Structural, Optical, and Bioactivity Properties of Silver-Doped Zinc Sulfide Nanoparticles Synthesized Using Plectranthus barbatus Leaf Extract

Alnehia

Al-Sharabi

Al-Hammadi

et al. 2023

Journal of Chemistry

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Aqueous leaf extract of Plectranthus barbatus was used, for the first time, for preparation of (2, 6 mol%) silver (Ag)-doped zinc sulfide nanoparticles (ZnS NPs), acting as a stabilizing and capping agent for NPs’ production. The obtained metal oxides were characterized by FTIR, UV-visible, XRD, and SEM methods. The results revealed that 0.02 and 0.06% Ag-doped ZnS had optical bandgaps of 3.20 and 3.03 eV. The XRD evinced the crystalline nature, while the FTIR confirmed the doped structure of the prepared oxides. The bioactivity investigations revealed that the biosynthesized Ag-doped ZnS NPs are more active against S. aureus than E. coli. Furthermore, the hemolytic tests indicated no potential harm to red blood cells if utilized at a low dose. Such enhanced optical and biological properties of Ag-doped ZnS may promote its prospective use in electronics and as an antibacterial agent.

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Structural, optical and electrical properties of CuSCN nano-powders doped with Li for optoelectronic applications

Cited by 13 publications

References 58 publications

Pomegranate Peel Extract-Mediated Green Synthesis of ZnO-NPs: Extract Concentration-Dependent Structure, Optical, and Antibacterial Activity

Pomegranate Peel Extract-Mediated Green Synthesis of ZnO-NPs: Extract Concentration-Dependent Structure, Optical, and Antibacterial Activity

Pressure-Dependent Structural and Band Gap Tuning of Semiconductor Copper(I) Thiocyanate (CuSCN)

Structural, Optical, and Bioactivity Properties of Silver-Doped Zinc Sulfide Nanoparticles Synthesized Using Plectranthus barbatus Leaf Extract

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