Hydrothermal synthesis of CdIn2S4 nanostructures using new starting reagent for elevating solar cells efficiency

摘要

Abstract In this study, various micro/nanostructures of CdIn2S4 were successfully synthesized via a facile hydrothermal method utilizing new starting reagent. The crystal structure, morphology, composition, and optical properties of the CdIn2S4 nanostructures were characterized by XRD, SEM, EDX, DRS and FT-IR techniques. Moreover, the reaction terms influencing the formation of CdIn2S4 nanostructures, such as reaction time and temperature, indium, sulfur and cadmium sources, as well as surfactant and solvent type were well studied and by introducing Cd-PMP, extracted from pomegranate marc peels by Cd(II), as new starting reagent, a simple route to synthesize CdIn2S4 nanoparticles was presented. Finally, efficiency of various as-synthesized CdIn2S4 nanostructures in thin layer solar cells was evaluated. The results showed that structures size and morphology have salient effect on solar cells efficiency and the prepared nanoparticles using Cd-PMP as new precursor have highest efficiency (~30% improvement). Also, utilizing the prepared CdIn2S4 nanoparticles as barrier layer in dye sensitized solar cells (DSSCs) presented remarkable enhancement in efficiency (~19%) of solar cells compared to other used samples. Graphical abstract Display Omitted Highlights ? CdIn2S4 micro/nanostructures with various morphologies were synthesized via hydrothermal route. ? Cd-PMP, extracted from pomegranate peels by Cd(II), was used as the new starting reagent. ? For the first time, CdIn2S4 nanoparticles were used as barrier layer in DSSCs. ? Using CdIn2S4 nanoparticles can improve the efficiency of DSSCs from 6.08% to 7.