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Morphologic Characterization of Anodic Titania Nanotube Arrays for Dye‐Sensitized Solar Cells
Author(s) -
Li LuLin,
Tsai ChiauYiag,
Wu HuiPing,
Chen ChienChon,
Diau Eric WeiGuang
Publication year - 2010
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201000164
Subject(s) - dye sensitized solar cell , anatase , titanium , chemistry , electrolyte , anode , nanotechnology , chemical engineering , nanotube , foil method , titanium oxide , characterization (materials science) , anodizing , solar cell , titanium dioxide , ruthenium , materials science , optoelectronics , photocatalysis , electrode , composite material , organic chemistry , aluminium , carbon nanotube , engineering , catalysis
We report morphologic characterization of the anodic titanium oxide (ATO) films with highly‐ordered titania (TiO 2 ) nanotube (NT) arrays grown perpendicularly to a titanium (Ti) foil. The length of the ATO arrays was controlled by various electrolytes and anodic periods at a constant applied voltage. In order to enhance the pathways for electron percolation, the ATO film was annealed in an air furnace, forming anatase TiO2. After TiCl4 post‐treatment to enhance the ruthenium‐based dye loading on the ATO surface, the optimized ATO arrays were used as a photoanode in a dye‐sensitized solar cell (DSSC). The best performance of the NT‐DSSC device was achieved with a NH 4 F‐based ATO film at length of 15 μm, giving J SC =12.15 mA cm −2 , V OC = 0.74 V, FF = 0.69, and η = 6.2% under backside illumination.