TiO2 nanotubes and their application in dye-sensitized solar cells.
The present article reviews the current status of using TiO(2) nanotubes in Grätzel-type, dye-sensitized solar cells and extends the overview with the latest results and findings. Critical factors in tube geometry (length, diameter, top morphology), crystal structure (amorphous, anatase, rutile) as well as factors affecting dye loading or electron mobility are addressed. The highest solar cell efficiencies today for pure nanotube systems reach approximately 4% while for some mixed systems, around 7% has been reported. For both systems significant room for enhancement is anticipated and some key points and strategies for improvement are outlined.
Roy
Poulomi
P
Department of Materials Science, University of Erlangen-Nürnberg, Martensstrasse 7, Erlangen, Germany.
Kim
Doohun
D
Lee
Kiyoung
K
Spiecker
Erdmann
E
Schmuki
Patrik
P
D004396:Coloring Agents / Q000737:chemistry*; D055664:Electrochemical Techniques; D043942:Nanotubes / Q000737:chemistry* / Q000648:ultrastructure; D012993:Solar Energy; D014025:Titanium / Q000737:chemistry*
D004396:Coloring Agents; C009495:titanium dioxide; D014025:Titanium