Gold Nanoparticles Modified Photoanode by Localized Surface Plasmon Resonance for Dye-Sensitized Solar Cell and Application Under Low Illumination

Gold Nanoparticles Modified Photoanode by Localized Surface Plasmon Resonance for Dye-Sensitized Solar Cell and Application Under Low Illumination

In this study, in order to investigate an optimal photoanode, Gold nanoparticles (AuNPs) are modified on the photoanode and are used to prepare the Dye-Sensitized solar cells (DSSCs). The result indicates that the PCEs of DSSCs with AuNPs are increased because the AuNPs increase the films absorbance of DSSCs by localized surface plasmon resonance (LSPR) effect. The light ab¬sorbance of Au-TiO2 films with Physical method (Au-TiO2) is increased as the concentration of AuNPs increases. The DSSCs of Au-TiO2 films with AuNPs absorption peaks of 1.5 a.u. for 2 hours have optimal photovoltaic characteristics, where the short-circuit current density (JSC) is 8.56 (mA/cm2), the open-circuit voltage (VOC) is 0.73 (V), the fill factor (F.F.) is 0.59, and the photoelectric conversion efficiency (PCE) is 3.76 (%). Moreover, the PCEs of DSSCs with Au-TiO2 1.5 a.u. films are improved from 3.76 % to 4.71% at a light intensity of 30 mW/cm2.