title: Improving the performance of quantum dot-sensitized solar cells by using TiO2 nanosheets with exposed highly reactive facets.
abstract: We demonstrated CdS quantum dot-sensitized solar cells (QDSSCs) based on anatase TiO2 nanosheets with exposed {001} and {100} facets. Under the illumination of one Sun (AM 1.5 G, 100 mW cm(-2)), the photovoltaic conversion efficiencies were 2.29% for a QDSSC based on {001}-TiO2 nanosheets, 2.18% for a QDSSC based on {100}-TiO2 nanosheets, and 1.46% for a QDSSC based on commercial Degussa P25. It was found that the exposed highly reactive facets of TiO2 nanosheets had a remarkable influence on the QDSSCs due to their better adsorption abilities for QDs, leading to the high short current density and the enhanced photovoltaic performance.
authors.affiliation: State Key Laboratory of Molecular Reaction Dynamics, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China.
authors.forename: Ting
authors.initials: T
authors.lastname: You
authors.forename: Lei
authors.initials: L
authors.lastname: Jiang
authors.forename: Ke-Li
authors.initials: KL
authors.lastname: Han
authors.forename: Wei-Qiao
authors.initials: WQ
authors.lastname: Deng