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Molecular‐Scale Interface Engineering of TiO 2 Nanocrystals: Improve the Efficiency and Stability of Dye‐Sensitized Solar Cells
Author(s) -
Wang P.,
Zakeeruddin S.M.,
HumphryBaker R.,
Moser J.E.,
Grätzel M.
Publication year - 2003
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200306084
Subject(s) - materials science , dye sensitized solar cell , energy conversion efficiency , nanocrystal , thermal stability , durability , grafting , ruthenium , solar cell , molecular engineering , chemical engineering , nanotechnology , optoelectronics , polymer , composite material , catalysis , organic chemistry , chemistry , electrode , engineering , electrolyte
Co‐grafting an amphiphilic polypyridyl ruthenium sensitizer and 1‐decylphosphonic acid on TiO 2 semiconductor nanocrystals has resulted in a long‐term thermally stable dye‐sensitized solar cell (see Figure) with higher than 7 % power conversion efficiency. The extraordinary stability of this high‐efficiency device under both thermal stress and light soaking matches the durability criteria for outdoor applications of solar cells.