Synthesis and Structural Characterization of Ba2CdTe3

DFT study of optoelectronic spectra of barium cadmium chalcogenides (Ba2CdX3, X = S, Se and Te)

“…Here, 1 (ω) and 2 (ω) represent the real and imaginary parts of dielectric function. The real part of dielectric function, 1 (ω) is related to dispersion of incident photons by the material and the imaginary part of the dielectric function, 2 (ω) corresponds to the energy absorbed by the materials [19][20][21].…”

“…Here, 1 (ω) and 2 (ω) represent the real and imaginary parts of dielectric function. The real part of dielectric function, 1 (ω) is related to dispersion of incident photons by the material and the imaginary part of the dielectric function, 2 (ω) corresponds to the energy absorbed by the materials [19][20][21]. The total interband contributions to the 2 (ω) component are calculated by considering the transition from the occupied to unoccupied states through the transition matrix elements [19][20][21].…”

“…E i is the energy of electron in the i th states. By using the Kramers-Kronig relation [19][20][21], 1 (ω) can be determined from the imaginary part as:…”

“…Barium cadmium chalcogenides Ba 2 CdX 3 (X = S, Se, Te) show some structural similarities isotypic to Ba 2 MnX 3 (X = S, Se, Te) which are also isotypic to K 2 AgI 3 . The Ba 2 CdX 3 chalcogenides crystallize in orthorhombic phase with space group Pnma (62) [1]. The structural and configuration studies of Ba 2 CdX 3 were carried out by Iglesias et al [2].…”

“…Ba 2 CdS 3 and Ba 2 CdSe 3 were formed by heating the mixture of 2BaS:CdS and 2BaSe:CdSe in evacuated Vycor ampoules between 1000°C and 1200°C for sulfide and between 700°C and 900°C for selenide [2]. Synthesis and structural properties of Ba 2 CdTe 3 were investigated by Wang et al [1].…”