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Formation of Titania Nanoarrays by Hydrothermal Reaction and Their Application in Photovoltaic Cells
Author(s) -
Wang Wenli,
Lin Hong,
Li Jianbao,
Wang Ning
Publication year - 2008
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2007.02132.x
Subject(s) - materials science , dye sensitized solar cell , hydrothermal circulation , hydrothermal synthesis , nanowire , substrate (aquarium) , nanotechnology , chemical engineering , titanium , solar cell , aqueous solution , photovoltaic system , optoelectronics , metallurgy , chemistry , electrode , ecology , oceanography , geology , biology , electrolyte , engineering
In the present study, titania (TiO 2 ) nanoarrays were prepared by hydrothermally oxidating a titanium substrate in aqueous alkali and then postannealed at 300°–550°C for 2 h. The nanoarrays were composed of oriented one‐dimensional nanowires or nanobelts. The growth mechanism of the nanoarrays was discussed by observing the structure under different synthesis conditions. The TiO 2 nanoarray film was transferred to a transparent conductive glass substrate, used as a photoanode of a dye‐sensitized solar cell (DSC). A light‐to‐energy conversion efficiency of 6.58% for the DSC was obtained.