期刊
JOURNAL OF PHYSICAL CHEMISTRY B
卷 110, 期 50, 页码 25504-25507出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp064860z
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资金
- Engineering and Physical Sciences Research Council [GR/S61768/01] Funding Source: researchfish
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 quasistatic 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.
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