Effect of quantum confinement on thermoelectric properties of vanadium dioxide nanofilms

Impact of ion irradiation, elemental doping and coating cycles on structural characteristic parameters of nanocrystalline VO 2 thin films

“…Following ageing of 24 h, the V 2 O 5 gel was spin‐coated on cleaned glass substrates. One and ten successive coatings were performed at a spin speed of 6000 rpm for 30 s on separate glass substrates [2]. Doped VO 2 films with 0, 1, 3 and 5% of Mo 6+ ‐ions were synthesised by the same process with the addition of an appropriate amount of MoO 3 (Sigma Aldrich) and melted in a ceramic crucible at 800–900°C for 25–30 min in a muffle furnace in an ambient atmosphere.…”

“…Obviously, VO 2 has emerged as a desirable contender for a variety of modern‐day technological applications such as variable reflectance mirrors, microbolometers, thermo‐optical switches, thermo‐optical light modulators, energy storage media, energy‐conserving coatings, and temperature sensors [2].…”

“…Vanadium dioxide (VO 2 ), a strong electron correlated metal oxide, has been the focus of extensive research because it undergoes first-order thermal reversible structural phase transition between high stable, less symmetric (P21/c), low temperature monoclinic (M1) semiconducting phase and low stable, high symmetric (P42/mnm), high-temperature tetragonal rutile (R) metallic phase (SMT) [1]. This SMT of VO 2 is scientifically exciting and technologically appealing around a phase transition temperature (T t ) of 341 K closest to room temperature than any other material discovered to date in its un-irradiated, un-doped, and bulk state [2][3][4][5].…”

Effect of the Metal–Insulator Transition on the Thermoelectric Properties of Composites Based on $${\mathrm{Bi}}_{0.5}{\mathrm{Sb}}_{1.5}{\mathrm{Te}}_{3}$$ with $${\mathrm{VO}}_{2}$$ Nanoparticles

“…It is well known that thermoelectric properties of strongly correlated electron systems could contribute to the semiconductor to metal transition (SMT). [13] Vanadium dioxide (VO ) ) is a strongly correlated oxide, [14] which shows a SMT close to room temperature, which induces remarkable changes in its structural, optical, and electrical properties. These characteristics have made vanadium dioxide the basis in the development of a great diversity of technological applications, such as temperature sensors, [15] energy storage media, [16] thermally-driven radiative diodes, [17] among others.…”

“…However, VO ) has received little attention in the field of thermoelectricity. [14] Few applications for VO ) in thermoelectricity has recently emerged. [18,19] Kosta et al [18] studied VO ) nanoparticles embedded into thermoelectric n-type Mg ) Si *.222 Sn *., Sb *.…”