Growth and microhardness studies of chalcogneides of arsenic, antimony and bismuth

Large‐Scale Synthesis of Ultralong Bi2S3 Nanoribbons via a Solvothermal Process

“…[3] It is known that bismuth sulfide (Bi 2 S 3 ) crystallizes with a lamellar structure with linked Bi 2 S 3 units forming infinite bands, which, in turn, are connected via weaker van der Waals interactions. [4] Its direct bandgap is about 1.3 eV, which makes it a potential material for photovoltaic converters.…”

Plasmons dispersion and nonvertical interband transitions in single crystal Bi2Se3investigated by electron energy-loss spectroscopy

“…Bi 2 Se 3 has initially been demonstrated to be a thermoelectric material with high figure of merit (ZT) [1][2] for the applications of thermoelectric and infrared devices. [3][4] In the past few years, Bi 2 Se 3 has attracted tremendous attention in the field of topological insulator (TI) because it was a second-generation three-dimensional (3D) TI featuring single Dirac cone at the Γ point with the gapless surface state (or conducting surface state). [5][6][7] Furthermore, due to the strong spin-orbital coupling, Bi 2 Se 3 posses the gapless surface state (or conducting surface state) and retains a bulk energy gap (E g ~ 0.3 eV), opening a new avenue to applications ranging from spintronics to quantum computation.…”

Characterization of Mixed Crystals of Sodium Chlorate and Sodium Bromate and the Doped Nickel Sulphate Crystals

“…The optical absorption coefficient (α) and optical band gap for the undoped and doped mixed crystals of sodium chlorate and sodium bromate were determined. The samples have wide transparency and can be used in opto-electronic applications [12,13]. …”