期刊
JOURNAL OF POWER SOURCES
卷 236, 期 -, 页码 10-16出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2013.02.037
关键词
Titanium oxide; Nanotube arrays; Nanocrystal; Surfactant; Dye-sensitized solar cells
资金
- Natural Science Foundation of China [91233102, 60876045, 11174194, 11025526]
- Innovation Program of Shanghai Municipal Education Commission [13ZZ076]
- Shanghai Leading Basic Research Project [09JC1405900]
- Shanghai Leading Academic Discipline Project [S30105, S30109]
- R&D Foundation of SHU-SOENs PV Joint Lab [SS-E0700601]
- Youth Science Fund Project of the Education Department of Jiangxi Province [GJJ10276]
Uniform, debris-free, fewer-crack, and highly ordered TiO2 nanotube arrays are prepared by a two-step anodic oxidation method, and a surfactant-assisted vacuum impregnation approach is developed to control the incorporation of sub-10-nm TiO2 nanocrystals into the nanotube arrays. By using the double polymer surfactants of polyethylene glycol and Polyvinyl Pyrrolidone as a sacrificed template, nanocrystal over-agglomeration is prohibited, and thin nanocrystal mesoporous layers are formed on both inner and outer nanotube walls. The application of the nanocrystal filled nanotube arrays as the photoanode for dye-sensitized solar cells has been evaluated. The incorporation of the nanocrystals into the nanotube arrays is found to enhance dye absorption and light-harvesting capacities markedly. As a result, the solar cells based on the filled nanotube arrays hold a short-circuit current density 2.06 times and a power-conversion efficiency 1.94 times higher than those based on the unfilled nanotube arrays. (c) 2013 Elsevier B.V. All rights reserved.
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