Selective Defect Metal Sulfide for Localized Surface Plasmon Resonance
As a p-type semiconductor with metal vacancies in the lattice,coppersulfide Cu2-xS has been proved asan effective photocatalyst with its unique semiconducting character, non-toxic nature andexcellent optoelectronic properties. In this work, we have synthesized copper sulphide nanostructure via hydrothermal method by using cetyltrimethylammonium bromide (CTAB) as a morphology controlling agent. Due to plasmonic nature, results from copper vacancy Cu2-xS nanocrystals possess a property called localized surface plasmon resonance which makes them capable of utilizing the NIR region of solar spectrum. The aim of this study is to explore copper sulphide catalyst which is capable of absorbing NIR region of the solar spectrum. It is found that copper sulphide has significantly enhanced light absorption over the entire wavelength range (from ultra-violet to near-infrared).
