Red and near infrared polarized light emission from polyfluorene copolymer based light emitting diodes
2007 (English)In: Applied Physics Letters, ISSN 0003-6951, Vol. 90, no 11, 113510- p.Article in journal (Refereed) Published
The authors report polarized red, electroluminescence peak at 705 nm and near infrared, electroluminescence peak at 950 nm, light emission from light emitting diodes based on two polyfluorene copolymers. The copolymers are synthesized from a fluorene monomer combined with donor-acceptor-donor comonomers and designed to have a low band gap and form birefringent liquid crystalline phases. Emission occurs from aligned thin films of polymer layers. The emissive layers are aligned by spin coating on a layer of rubbed conducting polymer poly(3,4-ethylene dioxythiophene)-poly(styrene sulphonate) and thermally converted into glassy nematic liquid crystalline state.
Place, publisher, year, edition, pages
2007. Vol. 90, no 11, 113510- p.
National CategoryPhysical Sciences
IdentifiersURN: urn:nbn:se:liu:diva-14224DOI: 10.1063/1.2713139OAI: oai:DiVA.org:liu-14224DiVA: diva2:22935