Hydrogen and nitrogen codoping of anatase TiO₂ for efficiency enhancement in organic solar cells.

ABSTRACT: TiO₂ has high chemical stability, strong catalytic activity and is an electron transport material in organic solar cells. However, the presence of trap states near the band edges of TiO₂ arising from defects at grain boundaries significantly affects the efficiency of organic solar cells. To become an efficient electron transport material for organic photovoltaics and related devices, such as perovskite solar cells and photocatalytic devices, it is important to tailor its band edges via doping. Nitrogen p-type doping has attracted considerable attention in enhancing the photocatalytic efficiency of TiO₂ under visible light irradiation while hydrogen n-type doping increases its electron conductivity. DFT calculations in TiO₂ provide evidence that n

SUBMITTER: Vasilopoulou M 

PROVIDER: S-EPMC5736610 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature