Outstanding optical properties of thermally grown (Bi2Se3)1-x (Bi2Te3)x thin films

Temperature dependent Raman and photoresponse studies of Bi2Te3 thin films annealed at different temperatures for improved optoelectronic performance

“…The bandgap of Bi 2 Te 3 thin films falls within the mid-infrared range. 7,8 Bi 2 Te 3 thin films display strong absorption within their optical bandgap, a property advantageous for infrared detectors. Their efficient absorption of specific wavelengths of light makes them suitable for applications in thermal radiation sensing and other optical detection technologies.…”

Integrated First Principles and Experimental Investigation of Thermoelectric Transport in Zr/Ti Half‐Heusler‐Type High Entropy Alloys

“…[3] A good thermoelectric material should have a high power factor (PF) (S 2 /ρ) and a low κ, but due to their strong interconnections, it is difficult to optimize the properties individually. [4,5] Conventional binary and ternary Bi 2 Te 3based thermoelectric materials in different forms and morphology (eutectics, composites, nanorods, doped, thin-film) [6] under different processing routes offer reasonable performance but face significant drawbacks due to the inclusion of expensive, rare materials and stability limited to temperatures below 500 K. [7][8][9][10][11][12] Unlike these materials, Heusler, half-Heusler (hH) compounds, skutterudites, clathrates, and carbon nanotubes exhibit a tuneable electronic structure. [13][14][15] hH compounds are noted for their thermoelectric efficiency, impressive mechanical properties, and high structural stability up to 1000 K. [16] These compounds, represented by the chemical formula XYZ, where X and Y are transition or rare earth metals and Z is a main group element, follow the 18-valence electron count (VEC) rule.…”

Structure, thermal and physic-chemical properties of some chalcogenide alloys

“…Due to low-cost, thin layers of Bi 2 Se 3 -Bi 2 Te 3 are very promising for solar cells fabrication. Not only this but also Bi 2 Te 3− x Se x alloys have long been investigated for thermoelectricity owing to their promising physical, electrical and thermal properties which make them ideal candidates for thermoelectric power generation applications [5][6][7]. On the other hand, investigations of the unique structural and physical properties of binary chalcogenides of the V 2 VI 3 group are feasible towards applications in the field of optoelectronic devices and thermo-electric modules [8].…”