Enhanced power conversion efficiency of dye-sensitized solar cells with multifunctional photoanodes based on a three-dimensional TiO2 nanohelix array
SCIE
SCOPUS
- Title
- Enhanced power conversion efficiency of dye-sensitized solar cells with multifunctional photoanodes based on a three-dimensional TiO2 nanohelix array
- Authors
- Lee, SH; Kwon, J; Kim, DY; Song, K; Oh, SH; Cho, J; Schubert, EF; Park, JH; Kim, JK
- Date Issued
- 2015-01
- Publisher
- ELSEVIER SCIENCE BV
- Abstract
- Developments of metal oxide nanostructures for simultaneous improvements in light harvesting and charge collection can lead to a significant technical progress in various applications such as photoelectrodes for photoelectrochemical cells and various types of solar cells. Here we present an array of three-dimensional titanium dioxide (TiO2) nanohelixes infiltrated with TiO2 nanoparticles as a multifunctional photoanode for dye sensitized solar cells (DSSCs). The unique geometry and the near-single crystallinity of the vertically aligned TiO2 nanohelix array results simultaneously in strong light scattering and enhanced carrier transport and collection, while maintaining a comparable surface area accessible for dye molecules by the infiltrated TiO2 nanoparticles. Consequently, despite a similar to 40% reduction in dye loading, the overall photon conversion efficiency of the DSSC with the nanoparticle-infiltrated nanohelix-array photoanode is enhanced by 6.2% in comparison with the DSSC with the conventional nanoparticle photoanode. (C) 2014 Elsevier B.V. All rights reserved.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/26819
- DOI
- 10.1016/J.SOLMAT.2014.08.007
- ISSN
- 0927-0248
- Article Type
- Article
- Citation
- SOLAR ENERGY MATERIALS AND SOLAR CELLS, vol. 132, page. 47 - 55, 2015-01
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