84 / 2019-10-31 21:40:58

A MULTIFUNCTIONAL PHOTOANODE MADE OF TITANIA SUBMICROSPHERES AND TITANIA NANOPARTICLES MODIFIED TITANIA NANOTUBE ARRAYS ON FTO GLASS FOR DYE-SENSITIZED SOLAR CELLS

dye-sensitized solar cells;photoanode;TiO2

We have proposed a novel engineered multifunctional photoanode which consists of one-dimensional (1D) TiO2 nanotube arrays modified by TiO2 nanoparticles as a bottom layer and three-dimensional (3D) TiO2 submicrospheres as a top layer by a simple one-time chemical bath deposition method. This 1D-3D bilayer photoanode simultaneously possesses the incompatible features such as high specific surface area, pronounced light-scattering ability, and fast electron transport. The novel 1D-3D bilayer photoanode demonstrates a power conversion efficiency (PCE) of 6.93%, leading to a 26.5% increment of PCE compared with that of TiO2 bare nanotube arrays (5.48%).