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Analysis of photovoltage decay transients in dye-sensitized solar cells


Reference:

Walker, A. B., Peter, L. M., Lobato, K. and Cameron, P., 2006. Analysis of photovoltage decay transients in dye-sensitized solar cells. Journal of Physical Chemistry B, 110 (50), pp. 25504-25507.

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Abstract

It is shown that application of the so-called quasi-static approximation greatly simplifies the theoretical treatment of the open circuit photovoltage decay of dye-sensitized nanostructured solar cells (DSCs), since it removes the need to treat the kinetics of trapping and detrapping explicitly and leads to a straightforward analytical solution in the case of an exponential trap distribution. To identify the conditions under which the quasi-static approach is valid, transients calculated using the quasi-static approximation are compared with the results of numerical calculations that treat trapping and detrapping of electrons explicitly. The application of the quasi-static approach to derive the rate constant for the back-reaction of electrons from experimental photovoltage decay data is illustrated for an optimized DSC.

Details

Item Type Articles
CreatorsWalker, A. B., Peter, L. M., Lobato, K. and Cameron, P.
DepartmentsFaculty of Science > Physics
Faculty of Science > Chemistry
RefereedYes
StatusPublished
ID Code8707

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