Ag-Doped TiO2Nanotube Arrays Composite Film as a Photoanode for Enhancing the Photoelectric Conversion Efficiency in DSSCs

Author:

Hu Jinghua12,Cheng Jiejie1,Tong Shengqiang1,Yang Yingping13ORCID,Chen Mengwei1,Hu Shiwu1

Affiliation:

1. School of Science, Wuhan University of Technology, Wuhan 430070, China

2. Department of Chemical and Petroleum Engineering, The University of Pittsburgh, Pittsburgh, PA 15261, USA

3. Department of Electrical and Computer Engineering, University of North Carolina at Charlotte, Charlotte, NC 28223, USA

Abstract

A Ag-doped double-layer composite film with TiO2nanoparticles (P25) as the underlayer and TiO2nanotube (TNT) arrays with the Ag-doped nanoparticles as the overlayer was fabricated as the photoanode in dye-sensitized solar cells (DSSCs). Five different concentrations of Ag-doped TNT arrays photoelectrode were compared with the pure TNT arrays composite photoelectrode. It is found that the photoelectric conversion efficiency of the TNT arrays composite photoanode is gradually improved from 3.00% of the pure TNT arrays composite photoanode to 6.12% of the Ag-doped TNT arrays photoanode with the increasing of the doping concentration, reaching up to the maximum in the 0.04 mol/L AgNO3solution, and then slightly decreased to 5.43% after continuing to increase the doping concentration. The reason is mainly that the cluster structure of the Ag nanoparticles with large surface area contributes to dye adsorption and the Surface Plasmon Resonance Effect of the Ag nanoparticles improved the photocatalytic ability of the TNT arrays film.

Funder

National Natural Science Foundation of China

Publisher

Hindawi Limited

Subject

General Materials Science,Renewable Energy, Sustainability and the Environment,Atomic and Molecular Physics, and Optics,General Chemistry

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