Zn doping induced optimization of optical and dielectric characteristics of CuInSe2 nanosheets for optoelectronic device applications

One-Pot Hydrothermal Synthesis of SnMnS Nanosheets for Dielectric Energy Storage Applications

“…The observed dielectric behavior can be explained with the help of various polarization processes, as stated by the Maxwell–Wagner phenomenon and Koop’s phenomenological theory. The relative permittivity and loss factor show a high value at a low frequency due to their dependency on several factors like accumulation of space charges, the orientation of dipoles along the field direction, and displacement of the electron cloud . As the frequency decreases, the electron could only follow the fast-changing frequency, which causes the reduction of overall polarization.…”

“…The relative permittivity and loss factor show a high value at a low frequency due to their dependency on several factors like accumulation of space charges, the orientation of dipoles along the field direction, and displacement of the electron cloud. 61 As the frequency decreases, the electron could only follow the fast-changing frequency, which causes the reduction of overall polarization. The reduction in polarization value causes the decrease in dielectric constant and loss of tangent value at high frequencies.…”

Water flow and finger-tapping mediated piezoelectric energy generation using a natural hematite-based flexible PVDF-HFP membrane

“…For a better understanding of the successful enhancement of polarizability, the electrical properties were explored by evaluating the dielectric permittivity, tangent loss, and storage capacity of the samples. 44 The dielectric constant was calculated from the relation containing a real ( ε ′) part associated with dielectric permittivity, illustrating the capacity for energy storage due to polarization, and an imaginary ( ε ′′) part conveying dissipation factor according to: 17,45 ε = ε ′ + jε ′′where ε ′ is the real part and ε ′′ is the imaginary part of the relative dielectric constant.…”

Morphological evolution of individual microrods to self-assembled 3D hierarchical flower architectures of CuBixIn1−xSe2 for photo response applications

“…For example, Zn alloying in CIS redshifts direct optical band energy, enhancing absorbance and enabling broad orange-red emission over the infrared (IR) range. 3 Similarly, core/shell quantum dots CIS/ Zn(S,Se) and corresponding inverts exhibited efficiencies suitable for photovoltaic (PV) applications due to local excitation and charge transfer excitation. 4 Composition variation is one of the promising approaches for achieving controllable properties, greater efficiencies, and stability.…”

“…Apart from variation in stoichiometry composition and introduction of impurities, the optical, morphology, and electronic characteristics of the semiconductors are greatly influenced by the method of preparation and condition of the same. Various chemical synthesis approaches such as the solvothermal method, 19 hydrothermal method, 20 colloidal synthesis, 21 hot injection method, 3 and microwave synthesis 22 have been deployed for the preparation of CIS. Among these, the microwave-assisted synthesis is a simple technique that offers fast and effective material processing with greater reproducibility.…”