Article ID Journal Published Year Pages File Type
1646734 Materials Letters 2012 4 Pages PDF
Abstract

The N/TiO2 nanobelts anodes were prepared by sol and powder combination technology. Transmission electron microscope (TEM) and X-ray photoelectron spectroscopy (XPS) confirmed the structure of nanobelts and the modification of non-metallic element N. Electrochemical Impedance Spectroscopy (EIS) measurements showed that the Rct2 corresponding to the TiO2/dye/electrolyte interface decreased 13.66 Ω. TiO2 in the form of belt was conducive to transmission of carriers produced by photoexcited dye. The modification of elements N led to a strong redshift to the visible region in the ultraviolet-visible spectra (UV–vis). Much more components of sunlight can be used. Therefore, the photoelectric conversion efficiency of dye-sensitized solar cell (DSSC) was improved.

► The N/TiO2 nanobelts anodes are prepared by sol and powder combination technology. ► XPS confirmed the structure of nanobelts and the modification of elements N. ► TiO2 in the form of belt can be conducive to transmission of carriers. ► The modification of elements N results in a strong redshift to the visible region.

Related Topics
Physical Sciences and Engineering Materials Science Nanotechnology
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