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Efficient solar energy conversion using TiO 2 nanotubes produced by rapid breakdown anodization – a comparison
Author(s) -
Hahn R.,
Stergiopoulus T.,
Macak J. M.,
Tsoukleris D.,
Kontos A. G.,
Albu S. P.,
Kim D.,
Ghicov A.,
Kunze J.,
Falaras P.,
Schmuki P.
Publication year - 2007
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.200701074
Subject(s) - anodizing , anatase , electrolyte , materials science , fluoride , dye sensitized solar cell , energy conversion efficiency , nanotube , chemical engineering , energy transformation , nanotechnology , optoelectronics , inorganic chemistry , electrode , chemistry , carbon nanotube , catalysis , composite material , photocatalysis , organic chemistry , aluminium , physics , engineering , thermodynamics
We report on dye‐sensitization of different TiO 2 nanotube layers, their photoelectrochemical response and their efficiency for solar energy conversion. The tubes compared in this study were either grown by controlled Ti anodization in fluoride containing electrolytes or by rapid breakdown anodization (RBA) of Ti in fluoride free electrolytes. After converting the different tube layers to anatase and sensitizing with Ru‐dye (N719), clearly layers consisting of RBA‐NTs show a significantly higher photoresponse and conversion efficiencies than tubes formed under self‐ordering conditions. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)