Molecularly engineered polymer LEDs

Stephen C. Moratti, Donald C. Bradley, Richard H. Friend, Neil C. Greenham, Andrew B. Holmes

Research output: Chapter in Book/Report/Conference proceedingConference contribution

16 Scopus citations

Abstract

Polymeric light emitting devices may be fabricated from a simple structure consisting of a low work function cathode (typically calcium or magnesium), a conjugated semiconducting polymer and a transparent anode (typically indium-tin oxide). Optimum device efficiencies require the balanced injection of electrons and holes. This paper describes the application of molecular engineering in the design of a family of poly(cyanoterephthalylidenene)s which show increased electron affinity over the unsubstituted analogue [poly(p-phenylenevinylene) PPV]. In particular these polymers as the emissive layer in a bilayer device with indium tin oxide (ITO, positive transparent contact) and aluminum (stable negative contact) and PPV as a hole transporting layer exhibit internal efficiencies up to 4%.
Original languageEnglish (US)
Title of host publicationMaterials Research Society Symposium Proceedings
PublisherPubl by Materials Research SocietyPittsburgh, PA, United States
ISBN (Print)1558992278
StatePublished - Jan 1 1994
Externally publishedYes

Fingerprint Dive into the research topics of 'Molecularly engineered polymer LEDs'. Together they form a unique fingerprint.

Cite this