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Determination of the Electron Lifetime in Nanocrystalline Dye Solar Cells by Open‐Circuit Voltage Decay Measurements
Author(s) -
Zaban Arie,
Greenshtein Miri,
Bisquert Juan
Publication year - 2003
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200200615
Subject(s) - open circuit voltage , nanocrystalline material , electron , materials science , optoelectronics , solar cell , voltage , atomic physics , analytical chemistry (journal) , chemistry , nanotechnology , physics , chromatography , quantum mechanics
Fate of electrons : Kinetic measurements of open‐circuit voltage decay in nanocrystalline TiO 2 dye‐sensitized solar cells reveal major features of the electron lifetime and recombination mechanisms in these solar cells. The lifetime dependence on the photovoltage is exponential in broad terms (see picture), ranging from three decades to 20 ms to 20 s, when the photovoltage decreases by about 0.6 V.