Journal
INORGANICA CHIMICA ACTA
Volume 361, Issue 3, Pages 663-670Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ica.2007.05.021
Keywords
electron transfer; transient emission; solar cell; dye sensitised
Categories
Ask authors/readers for more resources
Time resolved single photon counting is employed to monitor electron injection dynamics in dye sensitised solar cells. It is shown that, by the use of a non-injecting reference film and a simple stretched exponential fitting procedure with only two fitting parameters it is possible to resolve electron injection half-times down to 60 ps resolution. This provides a potentially cheaper and experimentally easier approach to monitor such dynamics compared to more widely used ultrafast pump/probe laser spectroscopy. Injection dynamics are observed for a range of different sensitiser dyes and redox electrolytes. As expected, the presence of a redox electrolyte results in a significant retardation of the injection half-times relative to an inert, aprotic solvent, with typical injection half- times being in the range 120 3000 ps depending upon sensitiser dye employed. In all cases, the injection dynamics fitted well to the stretched exponential function, consistent with a numerical model based upon inhomogeneous energetics of electron injection. (c) 2007 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available