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Abstract
In the present work we use a series of Ti–Ru alloys, with minor amounts of Ru (0.01, 0.02, 0.05 and 0.2 at%) to grow anodic self‐organized Ru‐doped TiO2 nanotube layers. When used in dye‐sensitized solar cells (DSSCs), the nanotube layers with an optimum amount of Ru (0.02 at% Ru in the alloy) show a considerable increase in solar cell efficiency (η = 5.2%) under AM1.5 (100 mW/cm2) conditions compared with non‐doped TiO2 nanotubes (η = 4.3%).
<!--Unmatched element: w:blockFixed-->(© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Ruthenium doping of TiO2 nanotube layers enhances their conductivity – this leads to a considerable beneficial effect when the layers are used as dye carriers in Grätzel‐type solar cells. The authors achieved in situ doping of the oxide nanotubes by using Ru alloys in a self‐organizing anodization process. There is an optimum Ru content of ≈0.02 at% that leads to improved conductivity while maintaining a well‐defined tube geometry.
<!--Unmatched element: w:blockFixed-->| Authors: | So, Seulgi; Lee, Kiyoung; Schmuki, Patrik | |
| Journal: | physica status solidi (RRL) - Rapid Research Letters | |
| Volume: | 6 | |
| Issue: | 4 | |
| Year: | 2012 | |
| Pages: | 169 | |
| DOI: | 10.1002/pssr.201105600 | |
| Publication date: | 01-04-2012 |
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