期刊
JOURNAL OF FLUORINE CHEMISTRY
卷 150, 期 -, 页码 78-84出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jfluchem.2013.03.012
关键词
Dye sensitized solar cell; Fluorine doped titania electrode; Band energetics; Trap state; Photoelectrochemistry
资金
- Program for University Innovative Research Team of Henan [2012IRTSHN017]
- National Natural Science Foundation of China [20773103]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry [2008101]
- Ministry of Personnel [2006164]
- Science &Technology Program of Education Department of Henan [2008A150022]
Dye-sensitized solar cells were fabricated using F-doped TiO2 electrodes. The X-ray diffraction patterns of the F doped TiO2 is almost the same as that of pure TiO2, showing that F has little influence on the formation of anatase titania. The influence of dopant F on band energetics and photoelectrochemical properties of nanostructured TiO2 electrodes was investigated. Compared with pure TiO2 electrodes, the E-fo, of F-doped TiO2 electrodes shifted little in electrolytes containing LiClO4. The total trap densities were remarkably decreased as TiO2 electrodes were doped with F. Finally the F-doped TiO2 electrodes were sensitized with Ru[L-2(NCS)(2)], L = 2,2'-bipyridine-4,4'-dicarboxylic acid and their photoelectrochemical properties were studied. Experiment results showed that the content of F plays an important role in the photoelectrochemical properties. The highest conversion efficiency of 8.07% was obtained with F-doped TiO2 electrodes containing F0.05 (molar ratio) under irradiation of 100 mW cm(-2) white light, about 11.3% higher than that of pure TiO2 electrodes. (C) 2013 Elsevier B.V. All rights reserved.
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