Abstract

TiO2 nanomaterials have attracted growing interests for many energy conversion and storage applications such as dye-sensitized solar cells (DSSCs). Plasmonic metal nanoparticles are expected to increase the energy conversion efficiency and to reduce the costs of photovoltaic cells due to the localized surface plasmon resonance (LSPR) effects. In this study, electrospinning method was adopted to synthesize Au/TiO2 and Au/SiO2 nanocomposites via a one-step route. The formation of gold nanoparticles during pyrolysis was characterized. DSSCs based on Au/TiO2 composite nanofibers with different gold contents were fabricated. The characterization of these devices showed that specific amount of gold nanoparticles incorporated in the TiO2 nanofibers improved the efficiency of DSSC, however, high gold nanoparticle loading decreased the device performance