期刊
RESEARCH ON CHEMICAL INTERMEDIATES
卷 39, 期 1, 页码 415-424出版社
SPRINGER
DOI: 10.1007/s11164-012-0659-x
关键词
Dye-sensitized solar cell (DSSC); Visible-light-responsive TiO2; Columnar structure; Radio-frequency magnetron sputtering (RF-MS); N719 dye
A visible-light-responsive TiO2 thin film (Vis-TiO2), possessing a unique columnar structure oriented perpendicular to the substrate, has been prepared by using a radio-frequency magnetron sputtering deposition method. The unique TiO2 thin film was used as a key component of N719 dye-sensitized solar cells (DSSCs). The rough morphology caused by the columnar structure leads to enhanced photovoltaic performances of these DSSCs as a consequence of increased amounts of adsorbed dyes and facilitated diffusion of the electrolyte into Vis-TiO2 film. Additionally, photovoltaic performances of the DSSCs were found to depend strongly on the thickness of the Vis-TiO2 film, which can be readily controlled by adjusting the sputtering time conducted for deposition. Consequently, a solar-to-electric energy conversion efficiency of 2.6 % under AM 1.5 illumination was observed for an optimally performing DSSC that has a Vis-TiO2 film thickness of 6.9 mu m, prepared by employing a sputtering time of 700 min.
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