Recombination luminescent conjugated polymers

Following photoexcitation from the ground state (lAg in the notation of molecular spectroscopy) to the lowest energy state with proper symmetry (1B ), recombination to the ground state can be either radiative (with the emission of light, i.e. luminescence) or non-radiative. Some families of conjugated polymers... 

Time-resolved photoluminescence spectroscopy has emerged as one of the most important tools for studying the properties of solid-state materials suited to optoelectronic applications, including semiconducting polymers. This is due to the relatively direct information about the excitation dynamics, such as recombination and relaxation processes, which is obtained from such experiments. Wong et al. [1232] have reported a luminescence lifetime much smaller than 1 ns in conjugated polymers and have pointed out that nonradiative as well as bimolecular processes might play an important role. Furukawa et al. [1233] have studied time-resolved luminescence in PPV and have explained the re-... 

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