Title :
Low-gap polymers incorporating a dicarboxylic imide moiety for near-infrared polymer light-emitting diodes
Author :
Zampetti, Andrea ; Minotto, Alessandro ; Cacialli, Franco ; Rodriguez, Amaranda Garcia ; Allard, Sybille ; Scherf, Ullrich
Author_Institution :
Dept. of Phys. & Astron., Univ. Coll. London, London, UK
Abstract :
We report our investigations of the photophysical properties of a so-called “donor-acceptor” (D-A) electroluminescent polymer incorporating N-alkyl-4,7-di(thien-2-yl)-2,1,3-benzothiadiazole-5,6-dicarboxylic imide (DI) as the electron acceptor and benzo[1,2-b:4,5-b´]dithiophene (BDT) acceptor units. Polymer light-emitting diodes (PLEDs) based on this copolymer give the best efficiency (external quantum efficiency EQE~0.04%) and show a pure near-infrared (NIR) electroluminescence (EL) with a peak at 870 nm.
Keywords :
electroluminescence; integrated optoelectronics; organic light emitting diodes; polymer blends; EQE~0; N-alkyl-4,7-di(thien-2-yl)-2,1,3-benzothiadiazole-5,6-dicarboxylic imide; NIR electroluminescence; PLED; benzo[1,2-b:4,5-b´]dithiophene; copolymer; dicarboxylic imide moiety; donor-acceptor electroluminescent polymer; external quantum efficiency; low-gap polymers; near-infrared polymer light emitting diodes; photophysical properties; wavelength 870 nm; Electroluminescence; Indium tin oxide; Organic light emitting diodes; Physics; Plastics; Substrates; PLEDs; electroluminescence; near-infrared (NIR);
Conference_Titel :
Environment and Electrical Engineering (EEEIC), 2015 IEEE 15th International Conference on
Conference_Location :
Rome
Print_ISBN :
978-1-4799-7992-9
DOI :
10.1109/EEEIC.2015.7165496
