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A high efficiency blue‐light‐emitting diode based on novel ladder poly( p ‐phenylene)s
Author(s) -
Grüner Johannes,
Hamer Peter J.,
Friend Richard H.,
Huber HansJoachim,
Scherf Ullrich,
Holmes Andrew B.
Publication year - 1994
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.19940061006
Subject(s) - materials science , light emitting diode , phenylene , diode , optoelectronics , poly(p phenylene) , polymer , composite material
Low energy losses due to non‐radiative decay are an important step towards high‐efficiency organic LEDs. The rigid, regioregular structure of the novel ladder poly( p ‐phenylene)s reported here lead to a reduction in such losses and to potentially interesting internal LED efficiencies of 1%. The effect on the efficiency of varying the length of the spacers in the structure is examined.