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- Title
Structural, linear/nonlinear optical, and electrical characteristics of polyvinyl chloride doped with non-stoichiometric nano cadmium sulfide.
- Authors
Heiba, Zein K.; El-naggar, A. M.; Kamal, A. M.; Mohamed, Mohamed Bakr
- Abstract
In this work, it was proposed to introduce non-stoichiometric nano cadmium sulfide (CdS1-x) nanoparticles into polyvinyl chloride (PVC) polymer using simple, environmentally friendly and low-cost techniques. Undoped and doped PVC polymers with non-stoichiometric CdS1-x were formed using casting and thermolysis procedures. Rietveld refinement was applied to identify the phases formed and microstructure parameters in non-stoichiometric CdS1-x. Different techniques were used to investigate the structure, morphology, optical properties and dielectric of polymer films. The direct and indirect optical band gap (Eg) values of the undoped PVC film are 5.63 eV and (5.22, 4.49, 3.51) eV. As the sulfur concentration in the nanofiller increased to 97%, the direct and indirect Eg values of the CdS1-x doped polymers decreased to (5.21, 4.07, 2.44) eV and (4.18, 2.3, 2.03) eV, respectively. The optical dielectric constant and optical conductivity reached their maximum values as the amount of sulfur reached 97% in CdS1-x. Doped polymers are effective materials against UVA, UVB, and UVC spectra and work very well as solar cell absorber materials. The CIE 1931 chromaticity diagram revealed that PVC shifted from blue color to green-yellow and yellow-orange regions under excitation wavelengths of 317 and 380 nm, respectively. The electrical dielectric constant reached its maximum value when the sulfur content of the nanofiller reached 95%. AC conductivity has its maximum value when PVC is loaded with CdS0.9. The manageable optical and electrical features show that PVC/CdS1-x polymers could be potential optical materials in the development of futuristic flexible-type optoelectronic devices.
- Subjects
OPTOELECTRONIC devices; CADMIUM sulfide; OPTICAL materials; OPTICAL constants; DIELECTRIC films; OPTICAL conductivity; POLYVINYL chloride; POLYMERS
- Publication
Optical & Quantum Electronics, 2024, Vol 56, Issue 3, p1
- ISSN
0306-8919
- Publication type
Article
- DOI
10.1007/s11082-023-06054-3