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Solar Cells by Design: Photoelectrochemistry of TiO 2 Nanorod Arrays Decorated with CdSe
Author(s) -
Bang Jin Ho,
Kamat Prashant V.
Publication year - 2010
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.200902234
Subject(s) - nanorod , materials science , rutile , photoelectrochemistry , nanotechnology , nanostructure , photoelectrochemical cell , substrate (aquarium) , solar cell , photocurrent , chemical engineering , electrolyte , hydrothermal circulation , mesoscopic physics , optoelectronics , electrochemistry , electrode , chemistry , oceanography , physics , quantum mechanics , geology , engineering
One‐dimensional (1D) nanostructures of TiO 2 are grown directly on transparent, conductive glass substrate using hydrothermal/solvothermal methods. When employed as a photoanode in photoelectrochemical cells, the vertically aligned TiO 2 nanorod array exhibits slower charge recombination at electrolyte interface as compared to mesoscopic TiO 2 particulate film. Electrochemical deposition of CdSe onto TiO 2 nanorod array is carried out to extend absorption into visible light region. The role of CdSe‐sensitized, 1D rutile TiO 2 architecture in the solar cell design is discussed.