The effect of post-deposition annealing conditions on structural and thermoelectric properties of sputtered copper oxide films

Abstract

This study reveals the interplay between the composition and thermoelectric performance of mixed copper oxide thin films, which can be finely adjusted by varying the annealing atmosphere.

High-performance rGO@CNTs@AgNbS nanocomposite electrode material for hybrid supercapacitor and electrochemical glucose sensor

“…It demonstrates a reduced level of resistance to the procedure of charge transfer. The electrode has stronger potentials for powerful ionic conductivity and outstanding capacitive responses due to its reduced diffusion path duration and reduced equivalent series and charge transfer resistances [61,62].…”

Environmentally Friendly Thermoelectric Materials: High Performance from Inorganic Components with Low Toxicity and Abundance in the Earth

“…The most wellknown stoichiometry for thermoelectric applications is that of CaMnO 3 , with zT values of 0.15 for 1173 K. [125] This value can be improved by doping with different rare-earth elements. Nevertheless, in the same work of Thiel et al, they reported tungsten doping, obtaining a zT value of 0.25 at 1223 K. [125] Cuprous oxide, Cu 2 O, has a Seebeck coefficient as high as 1050 µV•K −1 at temperatures of 923 K. [126] In the form of thinfilms, with both the copper oxides mixed in it, Seebeck values up to 204 µV•K −1 were reported, along with an electrical conductivity of 50 S•m −1 at room temperature, [127] but the thermal conductivity does not appear reported in those works, so in this case, there is still room for studying the material for thermoelectric applications.…”

“…The most commonly used are vapor chemical-based techniques, but also chemical synthesis such as sol-gel hydrolysis, solvothermal [151] or electrochemical methods, [113] such as Ti anodization, and hydrothermal synthesis are widely used for producing different oxides. Vapor deposition techniques such as atomic layer deposition, [152] sputtering, [127] molecular beam epitaxy, [153] or pulsed laser deposition [133,154] can also be used to form highly crystalline oxides. Finally, sintering methods such as SPS [140] or solid-state reactions [138] have also been used to form certain metal oxides…”

Sol-Gel Fabricated CuO Thin Film: Characterization for Device Application

“…It has 12 phonon branches: four atoms in the primitive cell (four Cu-O molecules per unit cell and two CuO units in the primitive cell). A factor-group analysis gives the following zone-center modes [15]:…”