Amines free environmentally friendly rapid synthesis of Cu2SnS3 nanoparticles

作者：Lokhande A C; Pawar S A; Jo Eunjin; He Mingrui; Shelke A; Lokhande C D; Kim Jin Hyeok^*

来源：Optical Materials, 2016, 58: 268-278.

DOI：10.1016/j.optmat.2016.03.032

• Cu2SnS3
• Nanoparticles
• Band gap
• Hot injection
• Sulfur source

Cubic and tetragonal structured Cu2SnS3 (CTS) nanoparticles are rapidly synthesized within a short reaction time of 5 min using low cost amine free octadecene (ODE) solvent by hot injection technique. The effects of precursor concentration, sulfur source and reaction time on the CTS nanoparticle synthesis are studied. The crystal structure, size, phase purity, atomic composition, oxidation state and optical properties of these nanoparticles are studied in detail by X-ray diffraction (XRD), transmission electron microscopy (TEM), Raman, energy dispersive X-ray spectroscopy (EDX), X-ray photoelectron spectroscopy (XPS) and UV-visible spectroscopy techniques. Spherical shaped particles in the size range of 25-30 nm are obtained with atomic composition in close agreement with the stoichiometry of Cu2SnS3. The reaction mechanism of CTS nanoparticle formation is proposed. The synthesized cubic and tetragonal structured CTS nanoparticles exhibit optimal band gaps of 1.23 eV and 1.45 eV, respectively, suitable for use in photovoltaic applications.

• 出版日期2016-8