Based on the experimental observation and first-principles density functional theory calculation, it is found that the formation energy of FCC-Sb2Te3 structure decreases gradually with the increase in C doping concentration. Moreover, doped C atoms tend to form C molecular clusters in sp2 ...
Crystal structure Trigonal phase Unit cell parameters a=b=0.427, c=3.052 nm; α=β=90°, γ=120° Growth method [Default] Flux zone (no halide contamination) defect free[Optional Bridgmann Growth] Purity 99.9999% confirmed XRD taken from Sb2Te3 crystals Raman spectrum acquired from Sb2Te3 ...
(GW) correction band structure show the semiconducting character of Sb2Te3 material with a direct band gap Eg of 0.221 eV, in agreement with previously reported value (Eg = 0.210 eV) while the projected density of states indicates (PDOS) that the p-orbital of Sb and Te atoms are ...
structure (solids and liquids)copper, Cuindium, Intellurium, Tebismuth, Biantimony, SbChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.I. D. ...
9.1 CRYSTAL STRUCTURE, CRYSTAL LATTICE A crystal is characterized by a three-dimensional, regular, periodic array of particles—atoms and/or molecules. Modern experimental techniques allow us to see the structure of large molecules in crystals using an electron microscope. Figure 9.1 is an electron...
Crystal structureWhereas for a series of layered compounds with the general formula (GeTe)n(Sb2Te3)m the stoichiometry allows to predict the structure type and the average thickness of the hexagonal atom layers, these rules are not generally applicable for GeTe-rich compounds like Ge4Sb2Te7. A...
Single-crystal Bi2Te3 nanowires (NWs) and nanoribbons (NRs) were synthesized by a vapor-liquid-solid (VLS) method from Bi2Te3 powder. To investigate the thermal properties of the Bi2Te3 nanostructure, a nondestructive technique based on temperature dependent Raman mapping was carried out. The Ra...
Bismuth telluride (Bi2Te3) is one of the most important commercial thermoelectric materials. In recent years, the discovery of topologically protected surf
3c which has the hexagonal structure. It has surface states due to the F-B asymmetry, compatible with the previous study21. In conclusion, based on lattice model Hamiltonian with the hop- ping between the 1NN CPs and all possible neighbor hoppings within each CP, we have proved that ther...
Crystal growth and thermoelectric properties of tetradymite-like layered chalcogenides and (Bi2Te3)1−x−y(Sb2Te3)x(Sb2Se3)y solid solutionsmikrosystemshandlingassemblytrainingASSEMIC networkThermoelectric materials for segmented n -and p -legs of thermoelectric generators have been prepared by ...