Mechanical and optoelectronic properties of ternary telluride NbFeTe2: A DFT approach

Pressure-dependent comparative study of the mechanical, electronic, and optical properties of CsPbX3 (X = Cl, Br, I): a DFT study for optoelectronic applications

“…The imaginary portion of this complex dielectric function is,where ω = 2π ν is the angular frequency of an incoming photon; and e , r̂ and û are the electronic charge, radius vector, and polarization vector of the incident field, respectively; whereas, Ψ c k and Ψ v k represent the wave functions of the conduction band and valence band at k , respectively. Optical properties, such as absorption, conductivity, loss function.reflectivity, and refractive index can be calculated explicitly in terms of ε 1 and ε 2 85 as,The charge-carrier recombination rate of specific materials used in solar cells is affected by a basic characteristic known as the dielectric function. 86,87 It provides a precise understanding of how optoelectronic devices function.…”

“…where o = 2pn is the angular frequency of an incoming photon; and e, r ˆand u ˆare the electronic charge, radius vector, and polarization vector of the incident field, respectively; whereas, C c k and C v k represent the wave functions of the conduction band and valence band at k, respectively. Optical properties, such as absorption, conductivity, loss function.reflectivity, and refractive index can be calculated explicitly in terms of e 1 and e 2 85 as,…”