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The Role of a “Schottky Barrier” at an Electron‐Collection Electrode in Solid‐State Dye‐Sensitized Solar Cells
Author(s) -
Snaith H. J.,
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.200502256
Subject(s) - materials science , schottky barrier , monochromatic color , anode , optoelectronics , electrode , dye sensitized solar cell , schottky effect , solid state , schottky diode , optics , engineering physics , diode , electrolyte , chemistry , physics , engineering
Solid‐state dye‐sensitized solar cells perform in a strictly different manner when tested under monochromatic as opposed to white‐light illumination. Without a UV component in the illumination source, a Schottky barrier is present at the anode interface. Data suggest (see figure) that the generation of surface states, under white‐light illumination, results in a pinning of the Fermi level in the TiO 2 at the anode interface. Improving this contact facilitates significant improvement in the device performance.