Influence of calcium substitution on structural, morphological and electrical conductivity properties of La1- xCaxNi0.5Ti0.5O3 (x = 0.0, x = 0.2) compounds for energy storage devices

Gharbi, S.; Ly, Ahmadou; Dhahri, E.; Barille, Régis; Lahem, Driss; Debliquy, Marc; Rguiti, M.

doi:10.1016/j.inoche.2022.109925

Cited by 1 publication

(1 citation statement)

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“…This is due to more charge carriers and more processes in the material for jumping charge carriers between consecutive sites. The phenomena then show dispersive behavior, yielding AC conduction conductivity σ ac 71 , 72 . The enhancement in conductivity with increasing temperature reveals that the conduction mechanism in the PVA/Ag/CaTiO 3 nanocomposite film has been thermally activated.…”

Section: Resultsmentioning

confidence: 99%

Gamma radiation-induced synthesis of novel PVA/Ag/CaTiO3 nanocomposite film for flexible optoelectronics

Abdel Maksoud,

Abdelhaleem,

Tawfik

et al. 2023

Sci Rep

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A flexible nanocomposite film based on polyvinyl alcohol (PVA), silver nanoparticles, and calcium titanate (CaTiO3) was synthesized using gamma radiation induced-reduction. Temperature-dependent structural, optical, DC electrical conductivity, electric modulus, and dielectric properties of PVA/Ag/CaTiO3 nanocomposite film were investigated. The XRD pattern proved the successful preparation of the nanocomposite film. Also, as the temperature increases, the average crystallite sizes of CaTiO3 and Ag nanoparticles decrease from 19.8 to 9.7 nm and 25 to 14.8 nm, respectively. Further, the optical band gap increased from 5.75 to 5.84 eV with increasing temperature. The thermal stability is improved, and the semiconductor behavior for PVA/Ag/CaTiO3 nanocomposite film is confirmed by thermal activation energy ΔE with values in the 0.11–0.8 eV range. Furthermore, the maximum barrier Wm value was found of 0.29 eV. PVA/Ag/CaTiO3 nanocomposite film exhibits a semicircular arc originating from the material’s grain boundary contributions for all temperatures. The optical, DC electrical conductivity, and dielectric properties of the PVA/Ag/CaTiO3 nanocomposite film can be suitable for flexible electronic devices such as electronic chips, optoelectronics, and energy storage applications.

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Section: Resultsmentioning

confidence: 99%