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Electric Field Induced Luminescence Quenching in Conjugated Polymers and in Molecularly Doped Polymers
Author(s) -
Vissenberg M.C.J.M.,
Vissenberg M.C.J.M.,
de Jong M. J. M.
Publication year - 1998
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/(sici)1521-3951(199801)205:1<347::aid-pssb347>3.0.co;2-o
Subject(s) - conjugated system , polymer , dissociation (chemistry) , intramolecular force , materials science , doping , photoluminescence , photochemistry , luminescence , electric field , intermolecular force , chemical physics , exciton , charge carrier , chemistry , optoelectronics , organic chemistry , molecule , condensed matter physics , physics , composite material , quantum mechanics
In conjugated polymer blends as well as in molecularly doped polymer systems the photoluminescence intensity decreases under application of an electric field. This effect is described using a theory that combines the migration of excitons with the dissociation of excitons into free charge carriers. Experimentally, clear differences between both systems have been observed when varying the concentration of the active material. The theory demonstrates that these differences are due to an intra molecular dissociation mechanism in the conjugated polymer systems and an inter molecular dissociation mechanism in the molecularly doped polymer systems.