Abstract
The electric-field-induced change in the fluorescence decay profile has been measured for methylene-linked carbazole (CZ) and terephthalic acid methyl ester (TAME) doped in a PMMA polymer film, using a picosecond time-resolved decay measurement system combined with a bipolar sample bias. The average lifetime of the fluorescence emitted from the locally excited state of CZ becomes shorter in the presence of an external electric field ( F ), confirming that the rate of photoinduced electron transfer from CZ to TAME is enhanced by F . Different decaying portions of the multi-exponential decay were also found to give different efficiencies in the electric field effect from each other, depending on the methylene chain length.
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