Journal
ELECTROCHIMICA ACTA
Volume 149, Issue -, Pages 264-270Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2014.10.115
Keywords
TiO2; Hierarchical; Branched structure; Nanosheet; Dye-sensitized solar cells
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Funding
- National Natural Science Foundation of China [21365010]
- Natural Science Foundation of Hainan Province [214022]
- Project of Hainan Applied Technology Research and Development [ZDXM2014098]
- Undergraduate Training Programs for Innovation and Entrepreneurship [cxcyxj201414]
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We report a novel hierarchical homogeneous nanoarchitecture of TiO2 nanosheets branched TiO2 nanosheet arrays, which is formed directly on transparent conductive fluorine-doped tin oxide (FTO) glass substrate through a one-step facile hydrothermal reaction without the use of a seed layer. The hierarchical homogeneous nanoarchitecture is composed of long TiO2 nanosheet trunks grafted with a large number of TiO2 nanosheet branches, which is an effective structure to improve the charge transport with the increase of the specific surface area. Dye-sensitized solar cell (DSSC) based on TiO2 nanosheets branched TiO2 nanosheet arrays can achieve an outstanding power conversion efficiency of 6.66%, which is attributed to the specific performances such as higher specific surface area for adsorbing more dye molecules, superior light scattering capacity for boosting the light-harvesting efficiency and faster charge transport for efficient charge collection. (C) 2014 Elsevier Ltd. All rights reserved.
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