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 ~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.
| Original language | English |
|---|---|
| Pages (from-to) | 47-55 |
| Number of pages | 9 |
| Journal | Solar Energy Materials and Solar Cells |
| Volume | 132 |
| DOIs | |
| Publication status | Published - 2015 Jan |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Renewable Energy, Sustainability and the Environment
- Surfaces, Coatings and Films
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Enhanced power conversion efficiency of dye-sensitized solar cells with multifunctional photoanodes based on a three-dimensional TiO2 nanohelix array. / Lee, Seung Hee; Kwon, Jeong; Kim, Dong Yeong; Song, Kyung; Oh, Sang Ho; Cho, Jaehee; Schubert, E. Fred; Park, Jong Hyeok; Kim, Jong Kyu.
In: Solar Energy Materials and Solar Cells, Vol. 132, 01.2015, p. 47-55.Research output: Contribution to journal › Article
TY - JOUR
T1 - Enhanced power conversion efficiency of dye-sensitized solar cells with multifunctional photoanodes based on a three-dimensional TiO2 nanohelix array
AU - Lee, Seung Hee
AU - Kwon, Jeong
AU - Kim, Dong Yeong
AU - Song, Kyung
AU - Oh, Sang Ho
AU - Cho, Jaehee
AU - Schubert, E. Fred
AU - Park, Jong Hyeok
AU - Kim, Jong Kyu
PY - 2015/1
Y1 - 2015/1
N2 - 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 ~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.
AB - 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 ~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.
UR - http://www.scopus.com/inward/record.url?scp=84907531859&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84907531859&partnerID=8YFLogxK
U2 - 10.1016/j.solmat.2014.08.007
DO - 10.1016/j.solmat.2014.08.007
M3 - Article
AN - SCOPUS:84907531859
VL - 132
SP - 47
EP - 55
JO - Solar Energy Materials and Solar Cells
JF - Solar Energy Materials and Solar Cells
SN - 0927-0248
ER -