Shape controlled synthesis of Cu3BiS3 nano- and microstructures by PEG assisted solvothermal method and functional properties

One-dimensional Cu3BiS3 nano-and microstructures were synthesized by solvothermal route using structural directing agent polyethylene glycol (PEG) as soft template. The effects of thiourea concentration on the morphological, structural and optical properties of Cu3BiS3 nano- and microstructures were investigated. X-ray diffraction study revealed that the synthesized Cu3BiS3 belongs to orthorhombic structure. Raman spectrum of the Cu3BiS3 exhibited its functional groups. The chemical bonding of the ions was examined by X-ray photoelectron spectroscopy. Field emission scanning electron microscope and transmission electron microscope analyses evidently showed that thiourea concentration acts as a crucial factor in tuning the morphology of Cu3BiS3 nano- and microstructures. The presence of Cu3BiS3 was confirmed by Energy Dispersive X-ray Analysis and elemental mapping. The growth mechanism of Cu3BiS3 nanostructures has been discussed. Conductivity of Cu3BiS3 measured by I-V characteristics of the nano- and microstructured film of ~ 2.5 µm thickness deposited on FTO substrate using electron beam evaporation method showed linear curve. The Hall measurements of the Cu3BiS3 films deposited on glass substrate were determined.