Improving the refractive index by engineering PbS/PVA nano polymer composite for optoelectronic applications

Tunable, reversible resistive switching behavior of PVA-zirconia nanocomposite films and validation of the trap-assisted switching mechanism by the selective application of external bias voltages

“…In this instance, the Williamson–Hall plot was utilized to calculate the strain together with crystallite size using the following equation. 29 where k is the shape factor (0.94), θ is the angle (radians), and λ is the wavelength of the X-ray Cu Kα source. From the slope of the W–H plot, all the blends that induced microstrain may be directly calculated, as shown in Fig.…”

“…The frequency-dependent step-like dispersion curves of ε / are fitted with a modified Cole–Cole model. 24,29 where ε ∞ is the high frequencies permittivity, Δ ε is the difference between statics and high frequency electrical permittivity, τ is the average relaxation time, α is the Cole–Cole parameter (0 ≤ α ≤ 1), σ SP is the conduction due to space charge, and P is the frequency power term added due to electrical conduction contribution. The fitted data demonstrates that space charge polarization or interfacial polarization improves at the RESET potential compared to the SET and no bias condition (as Δ ε values increases from 58.4 to 86.1 and 112.7 at a SET, zero bias, and RESET condition) (shown in Table S5, ESI†).…”

“…In this instance, the Williamson-Hall plot was utilized to calculate the strain together with crystallite size using the following equation. 29 b CS cos y…”

Phase transformation and interface crystallography between TiO2 and different TinO2n−1 phases

“…With the rapid development of technologies, functional composite materials have been widely used in fields including energy storage and conversion, 1,2 catalysis 3,4 and optoelectronic devices. 5,6 By compounding two types of materials with different properties, new composite materials with the advantages of the two constituent primitive materials can be obtained, achieving the synergistic effect and meeting various application requirements. For composite materials, the lattice matching of the two phases, the arrangement of atoms and the distribution of defects at the interface region are directly related to their physical and chemical properties.…”

Impact of Mn–Ni spinal ferrite nanoparticles on the structural, morphological, surface roughness, and optical parameters of polyvinyl alcohol for optoelectronic applications

“…[1][2][3] The polymer materials are characterized by their high flexibility and optical clarity but low refractive index. 4 This limits their uses in the field of optical device applications. This drawback can be overcome by the incorporation of nanofillers into the polymer matrix.…”