All solid-state solar cells based on CH3NH3PbI3-sensitized TiO2 nanotube arrays

作者：Yang, Xiuchun^*; Liu, Wei; Ren, Peng

来源：Physica E: Low-Dimensional Systems and Nanostructures , 2016, 83: 322-328.

DOI：10.1016/j.physe.2016.04.031

• Perovskite
• CH3NH3PbI3
• TiO2 nanotube arrays
• All solid-state solar cells

TiO2 nanotube arrays (TiO2 NTAs) were firstly used as photoanode in methylammonium lead iodide (CH3NH3PbI3) perovskite/TiO2 NTAs heterojunction solar cell, where CH3NH3PbI3 functions as both light absorber and hole conductor. The composition, structure and photoelectrochemical properties of the as prepared samples were characterized by x-ray diffractometer (XRD), field-emission scanning electron microscope (FE-SEM), ultraviolet-visible (UV-vis) spectrophotometer and electrochemical workstation. The results indicate that the as-prepared CH3NH3PbI3 belongs to the cubic crystal system, and TiO2 NTAs sensitized by 0.3 M CH3NH3I and Pb-12 exhibit the best photoelectrochemical properties with an open circuit voltage of 0.422 V and a short-circuit current density of 173.4 pA cm(-2). The EIS result shows that the extremely large resistance at CH3NH(3)Pb(13)/FTO interface contributes to the low current density of the perovskite solar cell.

• 出版日期2016-9
• 单位同济大学