Journal
APPLIED SURFACE SCIENCE
Volume 434, Issue -, Pages 11-15Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2017.10.131
Keywords
Titanium dioxide (TiO2); TiO2 hierarchical composite structure (TCS); Dye-sensitized solar cells; Photoanode; OD nanoparticle; 3D micro-spheres
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Funding
- talent scientific research fund of LSHU [1100130233, 1100130216]
- fundamental research funds for the doctoral of liaoning provincial natural science foundation [20170520259]
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Titanium dioxide (TiO2) based dye-sensitized solar cells (DSSCs) often exhibit superior power conversion performance. Here we report a DSSC with novel hierarchical TiO2 composite structure (TCS) composed of anatase TiO2 micro-spheres and rutile TiO2 nanobelt framework by hydrothermal approach for high-performance. As photoanode, the TCS based DSSC shows a strong efficiency enhancement by 58% compared with Degussa TiO2 (P25)-DSSC (4.33%). The excellent performance is mainly attribute to its special multi-dimensional structures of TiO2: much active sites of 0D nanoparticle with exposed excellent {001} facet, special electronic transmission channel of 1D nanobelt, good dye adsorption capacity of 2D nanosheet and high light scattering ability of 3D micro-spheres. The novel multi-dimensional TCS materials will open up a new avenue to the electronic devices fields. (C) 2017 Elsevier B.V. All rights reserved.
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