Multifunctional TiO2 nanowires-modified nanoparticles bilayer film for 3D dye-sensitized solar cells

作者:Wang, H.; Liu, Y.; Li, M.; Huang, H.; Xu, Hong-mei; Hong, Rui-jiang*; Shen, H.
来源:Optoelectronics and Advanced Materials-Rapid Communications, 2010, 4(8): 1166-1169.

摘要

The radial free-standing TiO2 nanowires were rooted into TiO2 nanoparticles film coated Ti wire via a facile hydrothermal method. This TiO2 nanowires-modified nanoparticles bilayer film acted as a multifunctional role for enhancing solar cells efficiency: light trapping, modification of thin film surface cracks, electricity-generation properties and providing fast electron transfer pathway. The study results revealed that the three-dimensional (3D) dye-sensitized solar cells fabricated with TiO2 bilayer film increased by 32.7% in the max output power as compared to the TiO2 NPs film under AM1.5G condition. This increase is mainly attributed to the better light scattering of the TiO2 bilayer film.