Copper Sulfide Powder

Copper Sulfide Powder

Cu2S powder is known to be a very important p‐type semiconductor due to its versatility, availability and low‐toxic nature. It exists in different phases ranging from copper‐rich (Cu2S) to sulfur‐rich (CuS), which exhibit wide variation of their direct/indirect band gaps. Further, plasmonic absorption is observed near IR region in non‐stoichiometric copper sulfide due to generation of free charge carriers. The electrical conductivity of copper sulfides very much rely on its composition and decreases from copper‐poor to copper‐rich compositions. Naturally occurring covellite phase of CuS shows extraordinary superconductivity at 1.63 K. Owing to wide variation in optical as well as electrical properties, copper sulfides find promising applications in the field of optoelectronic devices, photocatalysis, photovoltaic cells, sensors, battery electrodes and biomedical fields. Recent investigations have shown that size reduction of CuS into nanoscale dimension further causes significant alteration in their physical and chemical properties due to quantum confinement effect. Therefore, considerable attention has been focused on the fabrication of copper sulfides with different size, shape and morphology. The manipulation of their property based on the requirement were achieved with controlled growth process attaining different shapes of structured copper sulfides, In this regard, 0D nanocrystal with high surface area and active surface plasmon resonance are found to be very useful in optoelectronics and bioapplications. On the other hand, anisotropic structures of CuS are more suitable in electronic devices with directional electronic transportation and their structural integrity.Further manipulation on their properties can be attempted by fabricating copper sulfide‐ based hybrid structures with the combination of other materials exhibiting enhanced activity by manifold in many energy applications