Synthesis, characterization, and study of linear and non-linear optical properties of some newly thieno[2,3-b]thiophene analogs

Semiconductor Science and Technology, Journal Year: 2024, Volume and Issue: 39(12), P. 125014 - 125014

Published: Nov. 5, 2024

Abstract New 3,4-diaminothieno[2,3-b]thiophene derivatives were synthesized by attaching with different aromatic have rich electron. The resulting compounds been investigated FT-IR, NMR, elemental analysis and optical absorption spectra. Comparison between the revealed that oxoindolin-3-ylidene)amino)thieno[2,3-b]thiophene has highest peak intensity at ∼ 696 nm . Thin films prepared thermal evaporation technique characterized UV-visible-NIR spectroscopy associated absorption, dielectric dispersion parameters compared other reported results. obtained results indicated diethyl 3,4-bis(((E)-2-oxoindolin-3-ylidene)amino)thieno[2,3-b]thiophene-2,5-dicarboxylate 3,4-bis(((E)-2-oxoindolin-3-ylidene)amino)thieno[2,3-b]thiophene-2,5-dicarbonitrile manifested small band energy gap 1.95 eV 1.66 eV, respectively, as a result of increasing conjugation high coefficient, making these ideal for use in solar cells. nonlinear such refractive index third-order susceptibility organic compound thin are significantly asymptotic to chalcogenide oxide materials, them suitable devices.

Language: Английский

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Optical characterizations of lightly doped (PbS)1−x Znx thin films influenced by film thickness and annealing temperature for applications in highly intensive radiation systems

Journal of Materials Science Materials in Electronics, Journal Year: 2023, Volume and Issue: 34(28)

Published: Oct. 1, 2023

Abstract The lightly Zn-doped (PbS) 1− x (Zn) thin films were synthesized by the thermal deposition technique. structure, morphology, and elemental analyses carried out XRD, SEM, EDS, respectively, characterised UV–VIS–NIR spectroscopy. optical absorption, transmission, reflection have been studied analysed. linear non-linear parameters determined, explained, compared with reported results. effects of Zn-doping, film thickness, annealing temperature on NLO-parameters considered. better 2.78 × 10 –10 2.93 esu values refractive index n 2 3rd-order polarizability χ (3) , attained 0.97 0.03 150 nm thick annealed at 200 °C.

Language: Английский

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Multifunctional Ce⁺³ doped nickel-cobalt mixed ferrites via co-precipitation method for photocatalytic and antibacterial activity

Physica Scripta, Journal Year: 2024, Volume and Issue: 99(4), P. 045938 - 045938

Published: March 6, 2024

Abstract The overuse of industrial dyes and anti-bacterial drugs are destroying fresh water reservoirs making bacteria more resistant, respectively. To sort out these problems, we have synthesized Cerium doped Nickel-Cobalt mixed ferrites (Ce-@NCMF) with chemical composition [Ni 0.4 Co 0.6 Ce x Fe 2-x O 4 (where = 0.00, 0.10, 0.15, 0.20 0.25)] via co-precipitation method. Influence cerium doping on the structural, optical, electrical, magnetic, photocatalytic properties Ce-@NCMF studied. Powder x-ray diffraction analysis (PXRD) confirmed synthesis Ce-@NCMF. Decrease crystallite size from 29.71 to 24.95 nm was observed increase in dopant concentration. Tauc’s plot indicated decrease energy bandgap 2.10 1.89 eV concentration, which revealed absorption light visible region generate electron–hole pairs for applications. FTIR spectra presence M-O bonds as major functional group present Electrical demonstrated prominent electrical conductivity Ce-doping. VSM performed analyse magnetic materials showed saturation magnetization value 84.66 19.85 emu g −1 . Owing optical region, all samples were evaluated their potential degradation methylene blue. at 25% maximum efficiency (95%) under sunlight irradiation 90 min. Kinetic studies dye followed pseudo-1st order kinetics rate constant (k) 2.78×10 −2 min Antibacterial activity results bioactive nature against strains consistent samples. Smallest found most active gram-negative bacterial strains.

Language: Английский

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Characterization of Atmospheric Pressure Plasma Deposited (APPD) coatings to improve the friction behavior of thermoplastic surfaces

Surface and Coatings Technology, Journal Year: 2024, Volume and Issue: 488, P. 131040 - 131040

Published: July 1, 2024

Language: Английский

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Optoelectronic characterizations, and RT-NH3 gas sensing application of newly synthesized spiro[indoline-3,4′-pyrano[2,3-b]pyridine]derivative

Materials Science in Semiconductor Processing, Journal Year: 2024, Volume and Issue: 188, P. 109201 - 109201

Published: Dec. 10, 2024

Language: Английский

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