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High‐Efficiency Organic‐Dye‐ Sensitized Solar Cells Controlled by Nanocrystalline‐TiO 2 Electrode Thickness
Author(s) -
Ito S.,
Zakeeruddin S. M.,
HumphryBaker R.,
Liska P.,
Charvet R.,
Comte P.,
Nazeeruddin M. K.,
Péchy P.,
Takata M.,
Miura H.,
Uchida S.,
Grätzel M.
Publication year - 2006
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.200502540
Subject(s) - materials science , nanocrystalline material , dye sensitized solar cell , electrolyte , ionic liquid , acetonitrile , photocurrent , electrode , bilayer , ion , organic solar cell , chemical engineering , mesoscopic physics , diffusion , nanotechnology , optoelectronics , membrane , composite material , organic chemistry , polymer , chemistry , quantum mechanics , engineering , thermodynamics , catalysis , biochemistry , physics
A mesoscopic bilayer TiO 2 film used as an electron collector in conjunction with an acetonitrile‐ or ionic liquid‐based electrolyte greatly improves the performance of dye‐sensitized solar cells (see figure). The thickness of the nanocrystalline TiO 2 film affects the photovoltaic characteristics, particularly for the ionic‐liquid‐based electrolyte, owing to a limitation of the photocurrent by the diffusion of I 3 – ions.