Au Nanoparticles Doped TiO<sub>2</sub> Mesoporous Perovskite Solar Cells

Abstract

The incorporation of metal nanoparticles is not a new method, but remains a method not enough investigated in perovskite solar cells. Many others studies about organometal halide perovskite have been done to improve thin film photovoltaic devices efficiencies. This enhancement has been due to materials purity, surface passivation or surface area adsorbent but the main enhancement has been either by fast electron extraction or light harvester which allowed increasing the Photocurrent Density (Jsc). In many literatures, we find that Plasmon effect can improve the absorption of solar cells. In this study we used a sol-gel method to incorporate metal nanoparticles into TiO2 in perovskite solar cells and we investigated the absorption, interface matters and efficiency with gold nanoparticles (Au NPs) doped TiO2 perovskite solar cells. We consider they are many parameters that may have an effect on light absorption in perovskite solar cells using Au NPs doped TiO2, but the most enhancements are done either by reducing exciton binding energy or by a better crystalline surface.