Gold Nanoparticles and Silicate Microsheet Modified Photoanode for Dye Sensitized Solar Cells

Abstract

Gold nanoparticles and silicate microsheet modified TiO2 photoanode with various decoration amount of gold solution have been successfully synthesized. The gold nanoparticles were prepared using Turkevich method and silicate microsheet was using silica gel. The sample were characterized by XRD, SEM, and FTIR. The DSSC performance were evaluated by photocurrent-voltage measurement. The results show the increasing decoration amount of gold nanoparticles, increase the intensity of diffraction peaks. The gold nanoparticles size is 20-35 nm. Comparing with pristine TiO2 photoanode, the efficiency of DSSC using modified photoanode increase up to 31%.

A SYNERGISTIC ABSORPTION AND PLASMONIC EFFECT OF SiO2@Au@TiO2 IN TiO2 PHOTOANODE FOR DYE-SENSITIZED SOLAR CELLS

“…However, nanomaterials with a size of less than H"50 nm, such as those used in the mesoporous layer of the DSSCs, cannot adequately either scatter or reflect sunlight [3]. Efforts have been concentrated on synthesizing materials based on SiO 2 as a scattering material either in the form of a core/shell [4] or as a microsheet [5] and SiO 2 extracted from Sidoarjo mud that can scatter the incoming light as these materials are incorporated into the mesoporous layer, such as simple core/shell materials [6,7], core/multishell materials [8][9][10], and silica microsheet [11,12]. These light-scattering materials usually have a low surface area, and thus, they can reduce light harvesting in the light-sensitized coating of the mesoporous layer.…”