Increase of power conversion efficiency in dye-sensitized solar cells through ferroelectric substrate induced charge transport enhancement.

ABSTRACT: Ferroelectric functionalized dye-sensitized solar cells were fabricated by using a positively-poled LiNbO₃ substrate coated with ITO (ITO-LiNbO₃) as a collector electrode and demonstrated enhanced power conversion efficiency. Surface potential properties of TiO₂ nanoparticle film coated on the ITO-LiNbO₃ (TiO₂/ITO-LiNbO₃) examined by Kelvin probe force microscopy (KPFM) confirmed that a large electric field (a few 10 V/µm) generated from LiNbO₃ can penetrate through the ITO layer and is applied to TiO₂ film. This polarization-induced electric field leads to an increased photocurrent density by attracting and promoting electrons to direct transport through the mesoporous TiO₂ network toward th

SUBMITTER: Liu X 

PROVIDER: S-EPMC6255840 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature