Abstract
Excited-state processes in T4 organic dye-sensitized Al2O3and TiO2films were studied by femtosecond transient absorption spectroscopy and femtosecond time-resolved photoluminescence dynamics based on up-conversion method.By multiexponential analysis,we obtained the electron injection efficiency of 93% in T4 dye-sensitized TiO2film.In addition,we further got the electron injection rate of1.17 ps-1in the T4 dye-sensitized TiO2film by a static inhomogeneous electronic coupling model.
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