Photovoltaic and UV detector applications of ZnS/rGO nanocomposites synthesized by a green method

作者：Azimi H R; Ghoranneviss Mahmood; Elahi S M; Yousefi Ramin^*

来源：Ceramics International, 2016, 42(12): 14094-14099.

DOI：10.1016/j.ceramint.2016.06.018

• Electrical properties
• Functional application
• ZnS/graphene nanocomposites
• Green nanotechnology Photovoltaic
• UV photodetector

The effect of graphene concentration on the photovoltaic and UV detector applications of ZnS/graphene nanocomposites was investigated. The nanocomposites were synthesized by a green, cost-effective, and simple co-precipitation method with different graphene concentrations (5, 10, and 15 wt%) using L-cysteine amino acid as a surfactant and graphene oxide (GO) powder as a graphene source. Transmission electron microscopy (TEM) images showed that the ZnS NPs were decorated on GO sheets and the GO caused a significant decrease in ZnS diameter size. The results of X-ray diffraction (XRD) patterns, Raman, and Fourier transform infrared (FTIR) spectroscopy indicated that the GO sheets were changed into reduced graphene oxide (rGO) during synthesis process. Therefore, L-cysteine amino acid played its role as a reducing agent to reduce the GO. Photovoltaic measurements showed that the graphene caused to increase the efficiency of solar-cell application of ZnSirGO nanocomposites. In addition, our observation showed that the nanocomposites were suitable as ultraviolet (UV) detectors and graphene concentration increased the responsibility of the detectors.

• 出版日期2016-9