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Tuning of the photo‐ and electroluminescence in multi‐block copolymers of poly[ (silanylene)thiophene]s via exciton confinement
Author(s) -
Malliaras George G.,
Hadziioannou Georges,
Herrema Jan K.,
Wildeman Jurjen,
Wieringa Rienier H.,
Gill Richard E.,
Lampoura Stephania S.
Publication year - 1993
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.19930051006
Subject(s) - materials science , copolymer , electroluminescence , thiophene , exciton , luminescence , polymer , dopant , optoelectronics , quenching (fluorescence) , band gap , photochemistry , nanotechnology , doping , fluorescence , optics , condensed matter physics , organic chemistry , composite material , chemistry , physics , layer (electronics)
The combination of wide‐ and narrow‐band‐gap polymers in a block copolymer can provide a means of increasing the luminescence efficiency of the materials. This occurs because the excitons that are formed are trapped within specific units in the polymer chains and therefore cannot migrate to quenching sites caused by the presence of dopants. Color‐tunability is also possible through adjusting the band gaps of the components. Devices based on silanylene'thiophene lock copolymers are reproted.