Synthesis of In_2Se_3/CuSe Composite Powders by Solvothermal Method

摘要

The In_2Se_3/CuSe composite powders with the sizes in the range of 2-8um for solar cell were successfully synthesized via using relatively simple solvothermal method at atmospheric pressure by the reaction among InCI3·4H_2O, CUCI_2·2H_2O and Selenious acid and hydrazine hydrate in ethylene glycol. The influences of reaction temperature, reaction time, concentration of solution on the phases and morphologies of In_2Se_3/CuSe compositepowders were investigated. The phase and morphology of the products have been well studied by X-ray diffraction (XRD) and scanning electron microscope (SEM) techniques. The study revealed that under the conditions of solvothermal method at atmospheric pressure, relative pure In_2Se_3 and CuSe powders were synthesized at temperatures of 160°C and 100°C respectively. The In_2Se_3/CuSe of irregular flake composite powders with the average size of 2-8μm had been obtained. The morphology of the products can be controlled by adding different kinds of surfactants such as PVP (Polyvinylpyrrolidone), CTAB (Hexadecyl trimethyl ammonium Bromide) and so on.