期刊
APPLIED SURFACE SCIENCE
卷 368, 期 -, 页码 403-408出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2016.02.010
关键词
2D; TiO2; Dye-sensitized solar cell
类别
资金
- National Natural Science Foundation of China (NSFC) [61376009, 51590902]
- Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning [2013-70]
- Shanghai Municipal Education Commission
- Shanghai Education Development Foundation [135G55]
- Innovation Program of Shanghai Municipal Education Commission [13ZZ138]
- Science and Technology Commission of Shanghai Municipality [14YF1410500]
- Shanghai Young Teacher Supporting Foundation [ZZEGD14011]
- National High Technology Research and Development Program 863 [2006AA05Z417]
- Science and Technology Platform Construction Project of Dalian [2010-354]
Ultrathin two-dimensional (2D) TiO2 nanostructures with a thickness of similar to 5 nm and a specific surface area of 257.3 m(2) g(-1) were synthesized by a hydrothermal process. The 2D TiO2 nanostructures and P25 nanoparticles were introduced as scattering layer and underlayer to construct a bi-layer photoanode in a dye-sensitized solar cell (DSSC). The as-prepared DSSC exhibits an enhanced power conversion efficiency (5.14%), which is 23.9% higher than that of pure P25 DSSC (4.15%). Electrochemical impedance spectroscopy (EIS) indicates that DSSC based on P25-2D TiO2 nanostructures shows a longer life time and a larger recombination resistance. The enhanced photovoltaic properties are attributed to the excellent light scattering capability and high capacity for dye adsorption of 2D TiO2 nanostructures, which makes them a promising candidate as an efficient scattering layer in high-performance DSSCs. (C) 2016 Elsevier B.V. All rights reserved.
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